/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2019, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */

#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE
#endif
#undef _UNICODE  // JLBC
#include "xmlParser.h"
#ifdef _XMLWINDOWS
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>  // to have IsTextUnicode, MultiByteToWideChar, WideCharToMultiByte to handle unicode files
// to have "MessageBoxA" to display error messages for openFilHelper
#endif

#include <memory.h>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <cstdlib>

XMLCSTR XMLNode::getVersion() { return _CXML("v2.39"); }
void freeXMLString(XMLSTR t)
{
	if (t) free(t);
}

static XMLNode::XMLCharEncoding characterEncoding = XMLNode::char_encoding_UTF8;
static char guessWideCharChars = 1, dropWhiteSpace = 1,
			removeCommentsInMiddleOfText = 1;

inline int mmin(const int t1, const int t2) { return t1 < t2 ? t1 : t2; }
// You can modify the initialization of the variable "XMLClearTags" below
// to change the clearTags that are currently recognized by the library.
// The number on the second columns is the length of the string inside the
// first column. The "<!DOCTYPE" declaration must be the second in the list.
// The "<!--" declaration must be the third in the list.
typedef struct
{
	XMLCSTR lpszOpen;
	int openTagLen;
	XMLCSTR lpszClose;
} ALLXMLClearTag;
static ALLXMLClearTag XMLClearTags[] = {
	{_CXML("<![CDATA["), 9, _CXML("]]>")},
	{_CXML("<!DOCTYPE"), 9, _CXML(">")},
	{_CXML("<!--"), 4, _CXML("-->")},
	{_CXML("<PRE>"), 5, _CXML("</PRE>")},
	//  {    _CXML("<Script>") ,8,  _CXML("</Script>")},
	{nullptr, 0, nullptr}};

// You can modify the initialization of the variable "XMLEntities" below
// to change the character entities that are currently recognized by the
// library.
// The number on the second columns is the length of the string inside the
// first column. Additionally, the syntaxes "&#xA0;" and "&#160;" are
// recognized.
typedef struct
{
	XMLCSTR s;
	int l;
	XMLCHAR c;
} XMLCharacterEntity;
static XMLCharacterEntity XMLEntities[] = {
	{_CXML("&amp;"), 5, _CXML('&')},   {_CXML("&lt;"), 4, _CXML('<')},
	{_CXML("&gt;"), 4, _CXML('>')},	{_CXML("&quot;"), 6, _CXML('\"')},
	{_CXML("&apos;"), 6, _CXML('\'')}, {nullptr, 0, '\0'}};

// When rendering the XMLNode to a string (using the "createXMLString"
// function),
// you can ask for a beautiful formatting. This formatting is using the
// following indentation character:
#define INDENTCHAR _CXML('\t')

// The following function parses the XML errors into a user friendly string.
// You can edit this to change the output language of the library to something
// else.
XMLCSTR XMLNode::getError(XMLError xerror)
{
	switch (xerror)
	{
		case eXMLErrorNone:
			return _CXML("No error");
		case eXMLErrorMissingEndTag:
			return _CXML("Warning: Unmatched end tag");
		case eXMLErrorNoXMLTagFound:
			return _CXML("Warning: No XML tag found");
		case eXMLErrorEmpty:
			return _CXML("Error: No XML data");
		case eXMLErrorMissingTagName:
			return _CXML("Error: Missing start tag name");
		case eXMLErrorMissingEndTagName:
			return _CXML("Error: Missing end tag name");
		case eXMLErrorUnmatchedEndTag:
			return _CXML("Error: Unmatched end tag");
		case eXMLErrorUnmatchedEndClearTag:
			return _CXML("Error: Unmatched clear tag end");
		case eXMLErrorUnexpectedToken:
			return _CXML("Error: Unexpected token found");
		case eXMLErrorNoElements:
			return _CXML("Error: No elements found");
		case eXMLErrorFileNotFound:
			return _CXML("Error: File not found");
		case eXMLErrorFirstTagNotFound:
			return _CXML("Error: First Tag not found");
		case eXMLErrorUnknownCharacterEntity:
			return _CXML("Error: Unknown character entity");
		case eXMLErrorCharacterCodeAbove255:
			return _CXML(
				"Error: Character code above 255 is forbidden in MultiByte "
				"char mode.");
		case eXMLErrorCharConversionError:
			return _CXML(
				"Error: unable to convert between WideChar and MultiByte "
				"chars");
		case eXMLErrorCannotOpenWriteFile:
			return _CXML("Error: unable to open file for writing");
		case eXMLErrorCannotWriteFile:
			return _CXML("Error: cannot write into file");

		case eXMLErrorBase64DataSizeIsNotMultipleOf4:
			return _CXML(
				"Warning: Base64-string length is not a multiple of 4");
		case eXMLErrorBase64DecodeTruncatedData:
			return _CXML("Warning: Base64-string is truncated");
		case eXMLErrorBase64DecodeIllegalCharacter:
			return _CXML("Error: Base64-string contains an illegal character");
		case eXMLErrorBase64DecodeBufferTooSmall:
			return _CXML("Error: Base64 decode output buffer is too small");
	};
	return _CXML("Unknown");
}

/////////////////////////////////////////////////////////////////////////
//      Here start the abstraction layer to be OS-independent          //
/////////////////////////////////////////////////////////////////////////

// Here is an abstraction layer to access some common string manipulation
// functions.
// The abstraction layer is currently working for gcc, Microsoft Visual Studio
// 6.0,
// Microsoft Visual Studio .NET, CC (sun compiler) and Borland C++.
// If you plan to "port" the library to a new system/compiler, all you have to
// do is
// to edit the following lines.
#ifdef XML_NO_WIDE_CHAR
char myIsTextWideChar(const void* b, int len) { return FALSE; }
#else
#if defined(UNDER_CE) || !defined(_XMLWINDOWS)
char myIsTextWideChar(
	const void* b, int len)  // inspired by the Wine API: RtlIsTextUnicode
{
#ifdef sun
	// for SPARC processors: wchar_t* buffers must always be alligned, otherwise
	// it's a char* buffer.
	if ((((unsigned long)b) % sizeof(wchar_t)) != 0) return FALSE;
#endif
	const auto* s = (const wchar_t*)b;

	// buffer too small:
	if (len < (int)sizeof(wchar_t)) return FALSE;

	// odd length test
	if (len & 1) return FALSE;

	/* only checks the first 256 characters */
	len = mmin(256, len / sizeof(wchar_t));

	// Check for the special byte order:
	if (*((unsigned short*)s) == 0xFFFE)
		return TRUE;  // IS_TEXT_UNICODE_REVERSE_SIGNATURE;
	if (*((unsigned short*)s) == 0xFEFF)
		return TRUE;  // IS_TEXT_UNICODE_SIGNATURE

	// checks for ASCII characters in the UNICODE stream
	int i, stats = 0;
	for (i = 0; i < len; i++)
		if (s[i] <= (unsigned short)255) stats++;
	if (stats > len / 2) return TRUE;

	// Check for UNICODE nullptr chars
	for (i = 0; i < len; i++)
		if (!s[i]) return TRUE;

	return FALSE;
}
#else
char myIsTextWideChar(const void* b, int l)
{
	return (char)IsTextUnicode((CONST LPVOID)b, l, nullptr);
}
#endif
#endif

#ifdef _XMLWINDOWS
// for Microsoft Visual Studio 6.0 and Microsoft Visual Studio .NET and Borland
// C++ Builder 6.0
#ifdef _XMLWIDECHAR
wchar_t* myMultiByteToWideChar(const char* s, XMLNode::XMLCharEncoding ce)
{
	int i;
	if (ce == XMLNode::char_encoding_UTF8)
		i = (int)MultiByteToWideChar(CP_UTF8, 0, s, -1, nullptr, 0);
	else
		i = (int)MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, s, -1, nullptr, 0);
	if (i < 0) return nullptr;
	wchar_t* d = (wchar_t*)malloc((i + 1) * sizeof(XMLCHAR));
	if (ce == XMLNode::char_encoding_UTF8)
		i = (int)MultiByteToWideChar(CP_UTF8, 0, s, -1, d, i);
	else
		i = (int)MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, s, -1, d, i);
	d[i] = 0;
	return d;
}
static inline FILE* xfopen(XMLCSTR filename, XMLCSTR mode)
{
	return _wfopen(filename, mode);
}
static inline int xstrlen(XMLCSTR c) { return (int)wcslen(c); }
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return _wcsnicmp(c1, c2, l);
}
static inline int xstrncmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return wcsncmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2) { return _wcsicmp(c1, c2); }
static inline XMLSTR xstrstr(XMLCSTR c1, XMLCSTR c2)
{
	return (XMLSTR)wcsstr(c1, c2);
}
static inline XMLSTR xstrcpy(XMLSTR c1, XMLCSTR c2)
{
	return (XMLSTR)wcscpy(c1, c2);
}
#else
char* myWideCharToMultiByte(const wchar_t* s)
{
	UINT codePage = CP_ACP;
	if (characterEncoding == XMLNode::char_encoding_UTF8) codePage = CP_UTF8;
	int i = (int)WideCharToMultiByte(
		codePage,  // code page
		0,  // performance and mapping flags
		s,  // wide-character string
		-1,  // number of chars in string
		nullptr,  // buffer for new string
		0,  // size of buffer
		nullptr,  // default for unmappable chars
		nullptr  // set when default char used
	);
	if (i < 0) return nullptr;
	char* d = (char*)malloc(i + 1);
	WideCharToMultiByte(
		codePage,  // code page
		0,  // performance and mapping flags
		s,  // wide-character string
		-1,  // number of chars in string
		d,  // buffer for new string
		i,  // size of buffer
		nullptr,  // default for unmappable chars
		nullptr  // set when default char used
	);
	d[i] = 0;
	return d;
}
static inline FILE* xfopen(XMLCSTR filename, XMLCSTR mode)
{
	return fopen(filename, mode);
}
static inline int xstrlen(XMLCSTR c) { return (int)strlen(c); }
#ifdef __BORLANDC__
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return strnicmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2) { return stricmp(c1, c2); }
#else
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return _strnicmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2) { return _stricmp(c1, c2); }
#endif
static inline int xstrncmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return strncmp(c1, c2, l);
}
static inline XMLSTR xstrstr(XMLCSTR c1, XMLCSTR c2)
{
	return (XMLSTR)strstr(c1, c2);
}
static inline XMLSTR xstrcpy(XMLSTR c1, XMLCSTR c2)
{
	return (XMLSTR)strcpy(c1, c2);
}
#endif
#else
// for gcc and CC
#ifdef XML_NO_WIDE_CHAR
char* myWideCharToMultiByte(const wchar_t* s) { return nullptr; }
#else
char* myWideCharToMultiByte(const wchar_t* s)
{
	const wchar_t* ss = s;
	int i = (int)wcsrtombs(nullptr, &ss, 0, nullptr);
	if (i < 0) return nullptr;
	char* d = (char*)malloc(i + 1);
	wcsrtombs(d, &s, i, nullptr);
	d[i] = 0;
	return d;
}
#endif
#ifdef _XMLWIDECHAR
wchar_t* myMultiByteToWideChar(const char* s, XMLNode::XMLCharEncoding ce)
{
	const char* ss = s;
	int i = (int)mbsrtowcs(nullptr, &ss, 0, nullptr);
	if (i < 0) return nullptr;
	wchar_t* d = (wchar_t*)malloc((i + 1) * sizeof(wchar_t));
	mbsrtowcs(d, &s, i, nullptr);
	d[i] = 0;
	return d;
}
int xstrlen(XMLCSTR c) { return wcslen(c); }
#ifdef sun
// for CC
#include <widec.h>
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return wsncasecmp(c1, c2, l);
}
static inline int xstrncmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return wsncmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2) { return wscasecmp(c1, c2); }
#else
// for gcc
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return wcsncasecmp(c1, c2, l);
}
static inline int xstrncmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return wcsncmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2)
{
	return wcscasecmp(c1, c2);
}
#endif
static inline XMLSTR xstrstr(XMLCSTR c1, XMLCSTR c2)
{
	return (XMLSTR)wcsstr(c1, c2);
}
static inline XMLSTR xstrcpy(XMLSTR c1, XMLCSTR c2)
{
	return (XMLSTR)wcscpy(c1, c2);
}
static inline FILE* xfopen(XMLCSTR filename, XMLCSTR mode)
{
	char* filenameAscii = myWideCharToMultiByte(filename);
	FILE* f;
	if (mode[0] == _CXML('r'))
		f = fopen(filenameAscii, "rb");
	else
		f = fopen(filenameAscii, "wb");
	free(filenameAscii);
	return f;
}
#else
static inline FILE* xfopen(XMLCSTR filename, XMLCSTR mode)
{
	return fopen(filename, mode);
}
static inline int xstrlen(XMLCSTR c) { return strlen(c); }
static inline int xstrnicmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return strncasecmp(c1, c2, l);
}
static inline int xstrncmp(XMLCSTR c1, XMLCSTR c2, int l)
{
	return strncmp(c1, c2, l);
}
static inline int xstricmp(XMLCSTR c1, XMLCSTR c2)
{
	return strcasecmp(c1, c2);
}
static inline XMLSTR xstrstr(XMLCSTR c1, XMLCSTR c2)
{
	return (XMLSTR)strstr(c1, c2);
}
static inline XMLSTR xstrcpy(XMLSTR c1, XMLCSTR c2)
{
	return (XMLSTR)strcpy(c1, c2);
}
#endif
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
static inline int _strnicmp(const char* c1, const char* c2, int l)
{
	return strncasecmp(c1, c2, l);
}
#pragma clang diagnostic pop
#endif
#endif

///////////////////////////////////////////////////////////////////////////////
//            the "xmltoc,xmltob,xmltoi,xmltol,xmltof,xmltoa" functions      //
///////////////////////////////////////////////////////////////////////////////
// These 6 functions are not used inside the XMLparser.
// There are only here as "convenience" functions for the user.
// If you don't need them, you can delete them without any trouble.
#ifdef _XMLWIDECHAR
#ifdef _XMLWINDOWS
// for Microsoft Visual Studio 6.0 and Microsoft Visual Studio .NET and Borland
// C++ Builder 6.0
char xmltob(XMLCSTR t, int v)
{
	if (t && (*t)) return (char)_wtoi(t);
	return v;
}
int xmltoi(XMLCSTR t, int v)
{
	if (t && (*t)) return _wtoi(t);
	return v;
}
long xmltol(XMLCSTR t, long v)
{
	if (t && (*t)) return _wtol(t);
	return v;
}
double xmltof(XMLCSTR t, double v)
{
	if (t && (*t)) wscanf(t, "%f", &v); /*v=_wtof(t);*/
	return v;
}
#else
#ifdef sun
// for CC
#include <widec.h>
char xmltob(XMLCSTR t, int v)
{
	if (t) return (char)wstol(t, nullptr, 10);
	return v;
}
int xmltoi(XMLCSTR t, int v)
{
	if (t) return (int)wstol(t, nullptr, 10);
	return v;
}
long xmltol(XMLCSTR t, long v)
{
	if (t) return wstol(t, nullptr, 10);
	return v;
}
#else
// for gcc
char xmltob(XMLCSTR t, int v)
{
	if (t) return (char)wcstol(t, nullptr, 10);
	return v;
}
int xmltoi(XMLCSTR t, int v)
{
	if (t) return (int)wcstol(t, nullptr, 10);
	return v;
}
long xmltol(XMLCSTR t, long v)
{
	if (t) return wcstol(t, nullptr, 10);
	return v;
}
#endif
double xmltof(XMLCSTR t, double v)
{
	if (t && (*t)) wscanf(t, "%f", &v); /*v=_wtof(t);*/
	return v;
}
#endif
#else
char xmltob(XMLCSTR t, char v)
{
	if (t && (*t)) return (char)atoi(t);
	return v;
}
int xmltoi(XMLCSTR t, int v)
{
	if (t && (*t)) return atoi(t);
	return v;
}
long xmltol(XMLCSTR t, long v)
{
	if (t && (*t)) return atol(t);
	return v;
}
double xmltof(XMLCSTR t, double v)
{
	if (t && (*t)) return atof(t);
	return v;
}
#endif
XMLCSTR xmltoa(XMLCSTR t, XMLCSTR v)
{
	if (t) return t;
	return v;
}
XMLCHAR xmltoc(XMLCSTR t, XMLCHAR v)
{
	if (t && (*t)) return *t;
	return v;
}

/////////////////////////////////////////////////////////////////////////
//                    the "openFileHelper" function                    //
/////////////////////////////////////////////////////////////////////////

// Since each application has its own way to report and deal with errors, you
// should modify & rewrite
// the following "openFileHelper" function to get an "error reporting mechanism"
// tailored to your needs.
XMLNode XMLNode::openFileHelper(XMLCSTR filename, XMLCSTR tag)
{
	// guess the value of the global parameter "characterEncoding"
	// (the guess is based on the first 200 bytes of the file).
	FILE* f = xfopen(filename, _CXML("rb"));
	if (f)
	{
		char bb[205];
		int l = (int)fread(bb, 1, 200, f);
		setGlobalOptions(
			guessCharEncoding(bb, l), guessWideCharChars, dropWhiteSpace,
			removeCommentsInMiddleOfText);
		fclose(f);
	}

	// parse the file
	XMLResults pResults;
	XMLNode xnode = XMLNode::parseFile(filename, tag, &pResults);

	// display error message (if any)
	if (pResults.error != eXMLErrorNone)
	{
		// create message
		char message[2000], *s1 = (char*)"", *s3 = (char*)"";
		XMLCSTR s2 = _CXML("");
		if (pResults.error == eXMLErrorFirstTagNotFound)
		{
			s1 = (char*)"First Tag should be '";
			s2 = tag;
			s3 = (char*)"'.\n";
		}
		sprintf(
			message,
#ifdef _XMLWIDECHAR
			"XML Parsing error inside file '%S'.\n%S\nAt line %i, column "
			"%i.\n%s%S%s"
#else
			"XML Parsing error inside file '%s'.\n%s\nAt line %i, column "
			"%i.\n%s%s%s"
#endif
			,
			filename, XMLNode::getError(pResults.error), pResults.nLine,
			pResults.nColumn, s1, s2, s3);

// display message
#if defined(_XMLWINDOWS) && !defined(UNDER_CE) && \
	!defined(_XMLPARSER_NO_MESSAGEBOX_)
		MessageBoxA(
			nullptr, message, "XML Parsing error",
			MB_OK | MB_ICONERROR | MB_TOPMOST);
#else
		printf("%s", message);
#endif
		// exit(255);
	}
	return xnode;
}

/////////////////////////////////////////////////////////////////////////
//      Here start the core implementation of the XMLParser library    //
/////////////////////////////////////////////////////////////////////////

// You should normally not change anything below this point.

#ifndef _XMLWIDECHAR
// If "characterEncoding=ascii" then we assume that all characters have the same
// length of 1 byte.
// If "characterEncoding=UTF8" then the characters have different lengths (from
// 1 byte to 4 bytes).
// If "characterEncoding=ShiftJIS" then the characters have different lengths
// (from 1 byte to 2 bytes).
// This table is used as lookup-table to know the length of a character (in
// byte) based on the
// content of the first byte of the character.
// (note: if you modify this, you must always have XML_utf8ByteTable[0]=0 ).
static const char XML_utf8ByteTable[256] = {
	//  0 1 2 3 4 5 6 7 8 9 a b c d e f
	0, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x00
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x10
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x20
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x30
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x40
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x50
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x60
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x70 End of ASCII range
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x80 0x80 to 0xc1 invalid
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x90
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xa0
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xb0
	1, 1, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xc0 0xc2 to 0xdf 2 byte
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xd0
	3, 3, 3, 3, 3, 3, 3, 3,
	3, 3, 3, 3, 3, 3, 3, 3,  // 0xe0 0xe0 to 0xef 3 byte
	4, 4, 4, 4, 4, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1  // 0xf0 0xf0 to 0xf4 4 byte, 0xf5 and higher invalid
};
static const char XML_legacyByteTable[256] = {
	0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
static const char XML_sjisByteTable[256] = {
	//  0 1 2 3 4 5 6 7 8 9 a b c d e f
	0, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x00
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x10
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x20
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x30
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x40
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x50
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x60
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x70
	1, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0x80 0x81 to 0x9F 2 bytes
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0x90
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xa0
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xb0
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xc0
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0xd0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xe0 0xe0 to 0xef 2 bytes
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1  // 0xf0
};
static const char XML_gb2312ByteTable[256] = {
	//  0 1 2 3 4 5 6 7 8 9 a b c d e f
	0, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x00
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x10
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x20
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x30
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x40
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x50
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x60
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x70
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x80
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x90
	1, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xa0 0xa1 to 0xf7 2 bytes
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xb0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xc0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xd0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xe0
	2, 2, 2, 2, 2, 2, 2, 2,
	1, 1, 1, 1, 1, 1, 1, 1  // 0xf0
};
static const char XML_gbk_big5_ByteTable[256] = {
	//  0 1 2 3 4 5 6 7 8 9 a b c d e f
	0, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x00
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x10
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x20
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x30
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x40
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x50
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x60
	1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1,  // 0x70
	1, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0x80 0x81 to 0xfe 2 bytes
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0x90
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xa0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xb0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xc0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xd0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2,  // 0xe0
	2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 1  // 0xf0
};
static const char* XML_ByteTable =
	(const char*)XML_utf8ByteTable;  // the default is
// "characterEncoding=XMLNode::encoding_UTF8"
#endif

XMLNode XMLNode::emptyXMLNode;
XMLClear XMLNode::emptyXMLClear = {nullptr, nullptr, nullptr};
XMLAttribute XMLNode::emptyXMLAttribute = {nullptr, nullptr};

// Enumeration used to decipher what type a token is
typedef enum XMLTokenTypeTag
{
	eTokenText = 0,
	eTokenQuotedText,
	eTokenTagStart, /* "<"            */
	eTokenTagEnd, /* "</"           */
	eTokenCloseTag, /* ">"            */
	eTokenEquals, /* "="            */
	eTokenDeclaration, /* "<?"           */
	eTokenShortHandClose, /* "/>"           */
	eTokenClear,
	eTokenError
} XMLTokenType;

// Main structure used for parsing XML
typedef struct XML
{
	XMLCSTR lpXML;
	XMLCSTR lpszText;
	int nIndex, nIndexMissigEndTag;
	enum XMLError error;
	XMLCSTR lpEndTag;
	int cbEndTag;
	XMLCSTR lpNewElement;
	int cbNewElement;
	int nFirst;
} XML;

typedef struct
{
	ALLXMLClearTag* pClr;
	XMLCSTR pStr;
} NextToken;

// Enumeration used when parsing attributes
using Attrib = enum Attrib { eAttribName = 0, eAttribEquals, eAttribValue };

// Enumeration used when parsing elements to dictate whether we are currently
// inside a tag
using Status = enum Status { eInsideTag = 0, eOutsideTag };

XMLError XMLNode::writeToFile(
	XMLCSTR filename, const char* encoding, char nFormat) const
{
	if (!d) return eXMLErrorNone;
	FILE* f = xfopen(filename, _CXML("wb"));
	if (!f) return eXMLErrorCannotOpenWriteFile;
#ifdef _XMLWIDECHAR
	unsigned char h[2] = {0xFF, 0xFE};
	if (!fwrite(h, 2, 1, f)) return eXMLErrorCannotWriteFile;
	if ((!isDeclaration()) &&
		((d->lpszName) || (!getChildNode().isDeclaration())))
	{
		if (!fwrite(
				L"<?xml version=\"1.0\" encoding=\"utf-16\"?>\n",
				sizeof(wchar_t) * 40, 1, f))
			return eXMLErrorCannotWriteFile;
	}
#else
	if ((!isDeclaration()) &&
		((d->lpszName) || (!getChildNode().isDeclaration())))
	{
		if (characterEncoding == char_encoding_UTF8)
		{
			// header so that windows recognize the file as UTF-8:
			unsigned char h[3] = {0xEF, 0xBB, 0xBF};
			if (!fwrite(h, 3, 1, f)) return eXMLErrorCannotWriteFile;
			encoding = "utf-8";
		}
		else if (characterEncoding == char_encoding_ShiftJIS)
			encoding = "SHIFT-JIS";

		if (!encoding) encoding = "ISO-8859-1";
		if (fprintf(f, "<?xml version=\"1.0\" encoding=\"%s\"?>\n", encoding) <
			0)
			return eXMLErrorCannotWriteFile;
	}
	else
	{
		if (characterEncoding == char_encoding_UTF8)
		{
			unsigned char h[3] = {0xEF, 0xBB, 0xBF};
			if (!fwrite(h, 3, 1, f)) return eXMLErrorCannotWriteFile;
		}
	}
#endif
	int i;
	XMLSTR t = createXMLString(nFormat, &i);
	if (!fwrite(t, sizeof(XMLCHAR) * i, 1, f)) return eXMLErrorCannotWriteFile;
	if (fclose(f) != 0) return eXMLErrorCannotWriteFile;
	free(t);
	return eXMLErrorNone;
}

// Duplicate a given string.
XMLSTR stringDup(XMLCSTR lpszData, int cbData)
{
	if (lpszData == nullptr) return nullptr;

	XMLSTR lpszNew;
	if (cbData == -1) cbData = (int)xstrlen(lpszData);
	lpszNew = (XMLSTR)malloc((cbData + 1) * sizeof(XMLCHAR));
	if (lpszNew)
	{
		memcpy(lpszNew, lpszData, (cbData) * sizeof(XMLCHAR));
		lpszNew[cbData] = (XMLCHAR)NULL;
	}
	return lpszNew;
}

XMLSTR ToXMLStringTool::toXMLUnSafe(XMLSTR dest, XMLCSTR source)
{
	XMLSTR dd = dest;
	XMLCHAR ch;
	XMLCharacterEntity* entity;
	while ((ch = *source) != '\0')
	{
		entity = XMLEntities;
		do
		{
			if (ch == entity->c)
			{
				xstrcpy(dest, entity->s);
				dest += entity->l;
				source++;
				goto out_of_loop1;
			}
			entity++;
		} while (entity->s);
#ifdef _XMLWIDECHAR
		*(dest++) = *(source++);
#else
		switch (XML_ByteTable[(unsigned char)ch])
		{
			case 4:
				*(dest++) = *(source++);
				[[fallthrough]];
			case 3:
				*(dest++) = *(source++);
				[[fallthrough]];
			case 2:
				*(dest++) = *(source++);
				[[fallthrough]];
			case 1:
				*(dest++) = *(source++);
				break;
		}
#endif
	out_of_loop1:;
	}
	*dest = 0;
	return dd;
}

// private (used while rendering):
int ToXMLStringTool::lengthXMLString(XMLCSTR source)
{
	int r = 0;
	XMLCharacterEntity* entity;
	XMLCHAR ch;
	while ((ch = *source) != '\0')
	{
		entity = XMLEntities;
		do
		{
			if (ch == entity->c)
			{
				r += entity->l;
				source++;
				goto out_of_loop1;
			}
			entity++;
		} while (entity->s);
#ifdef _XMLWIDECHAR
		r++;
		source++;
#else
		ch = XML_ByteTable[(unsigned char)ch];
		r += ch;
		source += ch;
#endif
	out_of_loop1:;
	}
	return r;
}

ToXMLStringTool::~ToXMLStringTool() { freeBuffer(); }
void ToXMLStringTool::freeBuffer()
{
	if (buf) free(buf);
	buf = nullptr;
	buflen = 0;
}
XMLSTR ToXMLStringTool::toXML(XMLCSTR source)
{
	int l = lengthXMLString(source) + 1;
	if (l > buflen)
	{
		buflen = l;
		buf = (XMLSTR)realloc(buf, l * sizeof(XMLCHAR));
	}
	return toXMLUnSafe(buf, source);
}

// private:
XMLSTR fromXMLString(XMLCSTR s, int lo, XML* pXML)
{
	// This function is the opposite of the function "toXMLString". It decodes
	// the escape
	// sequences &amp;, &quot;, &apos;, &lt;, &gt; and replace them by the
	// characters
	// &,",',<,>. This function is used internally by the XML Parser. All the
	// calls to
	// the XML library will always gives you back "decoded" strings.
	//
	// in: string (s) and length (lo) of string
	// out:  new allocated string converted from xml
	if (!s) return nullptr;

	int ll = 0, j;
	XMLSTR d;
	XMLCSTR ss = s;
	XMLCharacterEntity* entity;
	while ((lo > 0) && (*s))
	{
		if (*s == _CXML('&'))
		{
			if ((lo > 2) && (s[1] == _CXML('#')))
			{
				s += 2;
				lo -= 2;
				if ((*s == _CXML('X')) || (*s == _CXML('x')))
				{
					s++;
					lo--;
				}
				while ((*s) && (*s != _CXML(';')) && ((lo--) > 0)) s++;
				if (*s != _CXML(';'))
				{
					pXML->error = eXMLErrorUnknownCharacterEntity;
					return nullptr;
				}
				s++;
				lo--;
			}
			else
			{
				entity = XMLEntities;
				do
				{
					if ((lo >= entity->l) &&
						(xstrnicmp(s, entity->s, entity->l) == 0))
					{
						s += entity->l;
						lo -= entity->l;
						break;
					}
					entity++;
				} while (entity->s);
				if (!entity->s)
				{
					pXML->error = eXMLErrorUnknownCharacterEntity;
					return nullptr;
				}
			}
		}
		else
		{
#ifdef _XMLWIDECHAR
			s++;
			lo--;
#else
			j = XML_ByteTable[(unsigned char)*s];
			s += j;
			lo -= j;
			ll += j - 1;
#endif
		}
		ll++;
	}

	d = (XMLSTR)malloc((ll + 1) * sizeof(XMLCHAR));
	s = d;
	while (ll-- > 0)
	{
		if (*ss == _CXML('&'))
		{
			if (ss[1] == _CXML('#'))
			{
				ss += 2;
				j = 0;
				if ((*ss == _CXML('X')) || (*ss == _CXML('x')))
				{
					ss++;
					while (*ss != _CXML(';'))
					{
						if ((*ss >= _CXML('0')) && (*ss <= _CXML('9')))
							j = (j << 4) + *ss - _CXML('0');
						else if ((*ss >= _CXML('A')) && (*ss <= _CXML('F')))
							j = (j << 4) + *ss - _CXML('A') + 10;
						else if ((*ss >= _CXML('a')) && (*ss <= _CXML('f')))
							j = (j << 4) + *ss - _CXML('a') + 10;
						else
						{
							free((void*)s);
							pXML->error = eXMLErrorUnknownCharacterEntity;
							return nullptr;
						}
						ss++;
					}
				}
				else
				{
					while (*ss != _CXML(';'))
					{
						if ((*ss >= _CXML('0')) && (*ss <= _CXML('9')))
							j = (j * 10) + *ss - _CXML('0');
						else
						{
							free((void*)s);
							pXML->error = eXMLErrorUnknownCharacterEntity;
							return nullptr;
						}
						ss++;
					}
				}
#ifndef _XMLWIDECHAR
				if (j > 255)
				{
					free((void*)s);
					pXML->error = eXMLErrorCharacterCodeAbove255;
					return nullptr;
				}
#endif
				(*d++) = (XMLCHAR)j;
				ss++;
			}
			else
			{
				entity = XMLEntities;
				do
				{
					if (xstrnicmp(ss, entity->s, entity->l) == 0)
					{
						*(d++) = entity->c;
						ss += entity->l;
						break;
					}
					entity++;
				} while (entity->s);
			}
		}
		else
		{
#ifdef _XMLWIDECHAR
			*(d++) = *(ss++);
#else
			switch (XML_ByteTable[(unsigned char)*ss])
			{
				case 4:
					*(d++) = *(ss++);
					ll--;
				/*FALLTHROUGH*/
				case 3:
					*(d++) = *(ss++);
					ll--;
				/*FALLTHROUGH*/
				case 2:
					*(d++) = *(ss++);
					ll--;
				/*FALLTHROUGH*/
				case 1:
					*(d++) = *(ss++);
					/*FALLTHROUGH*/
			}
#endif
		}
	}
	*d = 0;
	return (XMLSTR)s;
}

#define XML_isSPACECHAR(ch)                                              \
	((ch == _CXML('\n')) || (ch == _CXML(' ')) || (ch == _CXML('\t')) || \
	 (ch == _CXML('\r')))

// private:
char myTagCompare(XMLCSTR cclose, XMLCSTR copen)
// !!!! WARNING strange convention&:
// return 0 if equals
// return 1 if different
{
	if (!cclose) return 1;
	int l = (int)xstrlen(cclose);
	if (xstrnicmp(cclose, copen, l) != 0) return 1;
	const XMLCHAR c = copen[l];
	if (XML_isSPACECHAR(c) || (c == _CXML('/')) || (c == _CXML('<')) ||
		(c == _CXML('>')) || (c == _CXML('=')))
		return 0;
	return 1;
}

// Obtain the next character from the string.
static inline XMLCHAR getNextChar(XML* pXML)
{
	XMLCHAR ch = pXML->lpXML[pXML->nIndex];
#ifdef _XMLWIDECHAR
	if (ch != 0) pXML->nIndex++;
#else
	pXML->nIndex += XML_ByteTable[(unsigned char)ch];
#endif
	return ch;
}

// Find the next token in a string.
// pcbToken contains the number of characters that have been read.
static NextToken GetNextToken(
	XML* pXML, int* pcbToken, enum XMLTokenTypeTag* pType)
{
	NextToken result;
	XMLCHAR ch;
	XMLCHAR chTemp;
	int indexStart, nFoundMatch, nIsText = FALSE;
	result.pClr = nullptr;  // prevent warning

	// Find next non-white space character
	do
	{
		indexStart = pXML->nIndex;
		ch = getNextChar(pXML);
	} while XML_isSPACECHAR(ch);

	if (ch)
	{
		// Cache the current string pointer
		result.pStr = &pXML->lpXML[indexStart];

		// First check whether the token is in the clear tag list (meaning it
		// does not need formatting).
		ALLXMLClearTag* ctag = XMLClearTags;
		do
		{
			if (xstrncmp(ctag->lpszOpen, result.pStr, ctag->openTagLen) == 0)
			{
				result.pClr = ctag;
				pXML->nIndex += ctag->openTagLen - 1;
				*pType = eTokenClear;
				return result;
			}
			ctag++;
		} while (ctag->lpszOpen);

		// If we didn't find a clear tag then check for standard tokens
		switch (ch)
		{
			// Check for quotes
			case _CXML('\''):
			case _CXML('\"'):
				// Type of token
				*pType = eTokenQuotedText;
				chTemp = ch;

				// Set the size
				nFoundMatch = FALSE;

				// Search through the string to find a matching quote
				while ((ch = getNextChar(pXML)))
				{
					if (ch == chTemp)
					{
						nFoundMatch = TRUE;
						break;
					}
					if (ch == _CXML('<')) break;
				}

				// If we failed to find a matching quote
				if (nFoundMatch == FALSE)
				{
					pXML->nIndex = indexStart + 1;
					nIsText = TRUE;
					break;
				}

				//  4.02.2002
				//            if (FindNonWhiteSpace(pXML)) pXML->nIndex--;

				break;

			// Equals (used with attribute values)
			case _CXML('='):
				*pType = eTokenEquals;
				break;

			// Close tag
			case _CXML('>'):
				*pType = eTokenCloseTag;
				break;

			// Check for tag start and tag end
			case _CXML('<'):

				// Peek at the next character to see if we have an end tag '</',
				// or an xml declaration '<?'
				chTemp = pXML->lpXML[pXML->nIndex];

				// If we have a tag end...
				if (chTemp == _CXML('/'))
				{
					// Set the type and ensure we point at the next character
					getNextChar(pXML);
					*pType = eTokenTagEnd;
				}

				// If we have an XML declaration tag
				else if (chTemp == _CXML('?'))
				{
					// Set the type and ensure we point at the next character
					getNextChar(pXML);
					*pType = eTokenDeclaration;
				}

				// Otherwise we must have a start tag
				else
				{
					*pType = eTokenTagStart;
				}
				break;

			// Check to see if we have a short hand type end tag ('/>').
			case _CXML('/'):

				// Peek at the next character to see if we have a short end tag
				// '/>'
				chTemp = pXML->lpXML[pXML->nIndex];

				// If we have a short hand end tag...
				if (chTemp == _CXML('>'))
				{
					// Set the type and ensure we point at the next character
					getNextChar(pXML);
					*pType = eTokenShortHandClose;
					break;
				}
			/*FALLTHROUGH*/

			// If we haven't found a short hand closing tag then drop into the
			// text process

			// Other characters
			default:
				nIsText = TRUE;
		}

		// If this is a TEXT node
		if (nIsText)
		{
			// Indicate we are dealing with text
			*pType = eTokenText;
			while ((ch = getNextChar(pXML)))
			{
				if
					XML_isSPACECHAR(ch)
					{
						indexStart++;
						break;
					}
				else if (ch == _CXML('/'))
				{
					// If we find a slash then this maybe text or a short hand
					// end tag
					// Peek at the next character to see it we have short hand
					// end tag
					ch = pXML->lpXML[pXML->nIndex];
					// If we found a short hand end tag then we need to exit the
					// loop
					if (ch == _CXML('>'))
					{
						pXML->nIndex--;
						break;
					}
				}
				else if (
					(ch == _CXML('<')) || (ch == _CXML('>')) ||
					(ch == _CXML('=')))
				{
					pXML->nIndex--;
					break;
				}
			}
		}
		*pcbToken = pXML->nIndex - indexStart;
	}
	else
	{
		// If we failed to obtain a valid character
		*pcbToken = 0;
		*pType = eTokenError;
		result.pStr = nullptr;
	}

	return result;
}

XMLCSTR XMLNode::updateName_WOSD(XMLSTR lpszName)
{
	if (!d)
	{
		free(lpszName);
		return nullptr;
	}
	if (d->lpszName && (lpszName != d->lpszName)) free((void*)d->lpszName);
	d->lpszName = lpszName;
	return lpszName;
}

// private:
XMLNode::XMLNode(struct XMLNodeDataTag* p)
{
	d = p;
	(p->ref_count)++;
}
XMLNode::XMLNode(XMLNodeData* pParent, XMLSTR lpszName, char isDeclaration)
{
	d = (XMLNodeData*)malloc(sizeof(XMLNodeData));
	d->ref_count = 1;

	d->lpszName = nullptr;
	d->nChild = 0;
	d->nText = 0;
	d->nClear = 0;
	d->nAttribute = 0;

	d->isDeclaration = isDeclaration;

	d->pParent = pParent;
	d->pChild = nullptr;
	d->pText = nullptr;
	d->pClear = nullptr;
	d->pAttribute = nullptr;
	d->pOrder = nullptr;

	updateName_WOSD(lpszName);
}

XMLNode XMLNode::createXMLTopNode_WOSD(XMLSTR lpszName, char isDeclaration)
{
	return XMLNode(nullptr, lpszName, isDeclaration);
}
XMLNode XMLNode::createXMLTopNode(XMLCSTR lpszName, char isDeclaration)
{
	return XMLNode(nullptr, stringDup(lpszName), isDeclaration);
}

#define MEMORYINCREASE 50

static inline void myFree(void* p)
{
	if (p) free(p);
}
static inline void* myRealloc(void* p, int newsize, int memInc, int sizeofElem)
{
	if (p == nullptr)
	{
		if (memInc) return malloc(memInc * sizeofElem);
		return malloc(sizeofElem);
	}
	if ((memInc == 0) || ((newsize % memInc) == 0))
		p = realloc(p, (newsize + memInc) * sizeofElem);
	//    if (!p)
	//    {
	//        printf("XMLParser Error: Not enough memory! Aborting...\n");
	//        exit(220);
	//    }
	return p;
}

// private:
XMLElementPosition XMLNode::findPosition(
	XMLNodeData* d, int index, XMLElementType xxtype)
{
	if (index < 0) return -1;
	int i = 0, j = (int)((index << 2) + xxtype), *o = d->pOrder;
	while (o[i] != j) i++;
	return i;
}

// private:
// update "order" information when deleting a content of a XMLNode
int XMLNode::removeOrderElement(XMLNodeData* d, XMLElementType t, int index)
{
	int n = d->nChild + d->nText + d->nClear, *o = d->pOrder,
		i = findPosition(d, index, t);
	memmove(o + i, o + i + 1, (n - i) * sizeof(int));
	for (; i < n; i++)
		if ((o[i] & 3) == (int)t) o[i] -= 4;
	// We should normally do:
	// d->pOrder=(int)realloc(d->pOrder,n*sizeof(int));
	// but we skip reallocation because it's too time consuming.
	// Anyway, at the end, it will be free'd completely at once.
	return i;
}

void* XMLNode::addToOrder(
	int memoryIncrease, int* _pos, int nc, void* p, int size,
	XMLElementType xtype)
{
	//  in: *_pos is the position inside d->pOrder ("-1" means "EndOf")
	// out: *_pos is the index inside p
	p = myRealloc(p, (nc + 1), memoryIncrease, size);
	int n = d->nChild + d->nText + d->nClear;
	d->pOrder =
		(int*)myRealloc(d->pOrder, n + 1, memoryIncrease * 3, sizeof(int));
	int pos = *_pos, *o = d->pOrder;

	if ((pos < 0) || (pos >= n))
	{
		*_pos = nc;
		o[n] = (int)((nc << 2) + xtype);
		return p;
	}

	int i = pos;
	memmove(o + i + 1, o + i, (n - i) * sizeof(int));

	while ((pos < n) && ((o[pos] & 3) != (int)xtype)) pos++;
	if (pos == n)
	{
		*_pos = nc;
		o[n] = (int)((nc << 2) + xtype);
		return p;
	}

	o[i] = o[pos];
	for (i = pos + 1; i <= n; i++)
		if ((o[i] & 3) == (int)xtype) o[i] += 4;

	*_pos = pos = o[pos] >> 2;
	memmove(
		((char*)p) + (pos + 1) * size, ((char*)p) + pos * size,
		(nc - pos) * size);

	return p;
}

// Add a child node to the given element.
XMLNode XMLNode::addChild_priv(
	int memoryIncrease, XMLSTR lpszName, char isDeclaration, int pos)
{
	if (!lpszName) return emptyXMLNode;
	d->pChild = (XMLNode*)addToOrder(
		memoryIncrease, &pos, d->nChild, d->pChild, sizeof(XMLNode),
		eNodeChild);
	d->pChild[pos].d = nullptr;
	d->pChild[pos] = XMLNode(d, lpszName, isDeclaration);
	d->nChild++;
	return d->pChild[pos];
}

// Add an attribute to an element.
XMLAttribute* XMLNode::addAttribute_priv(
	int memoryIncrease, XMLSTR lpszName, XMLSTR lpszValuev)
{
	if (!lpszName) return &emptyXMLAttribute;
	if (!d)
	{
		myFree(lpszName);
		myFree(lpszValuev);
		return &emptyXMLAttribute;
	}
	int nc = d->nAttribute;
	d->pAttribute = (XMLAttribute*)myRealloc(
		d->pAttribute, (nc + 1), memoryIncrease, sizeof(XMLAttribute));
	XMLAttribute* pAttr = d->pAttribute + nc;
	pAttr->lpszName = lpszName;
	pAttr->lpszValue = lpszValuev;
	d->nAttribute++;
	return pAttr;
}

// Add text to the element.
XMLCSTR XMLNode::addText_priv(int memoryIncrease, XMLSTR lpszValue, int pos)
{
	if (!lpszValue) return nullptr;
	if (!d)
	{
		myFree(lpszValue);
		return nullptr;
	}
	d->pText = (XMLCSTR*)addToOrder(
		memoryIncrease, &pos, d->nText, d->pText, sizeof(XMLSTR), eNodeText);
	d->pText[pos] = lpszValue;
	d->nText++;
	return lpszValue;
}

// Add clear (unformatted) text to the element.
XMLClear* XMLNode::addClear_priv(
	int memoryIncrease, XMLSTR lpszValue, XMLCSTR lpszOpen, XMLCSTR lpszClose,
	int pos)
{
	if (!lpszValue) return &emptyXMLClear;
	if (!d)
	{
		myFree(lpszValue);
		return &emptyXMLClear;
	}
	d->pClear = (XMLClear*)addToOrder(
		memoryIncrease, &pos, d->nClear, d->pClear, sizeof(XMLClear),
		eNodeClear);
	XMLClear* pNewClear = d->pClear + pos;
	pNewClear->lpszValue = lpszValue;
	if (!lpszOpen) lpszOpen = XMLClearTags->lpszOpen;
	if (!lpszClose) lpszClose = XMLClearTags->lpszClose;
	pNewClear->lpszOpenTag = lpszOpen;
	pNewClear->lpszCloseTag = lpszClose;
	d->nClear++;
	return pNewClear;
}

// private:
// Parse a clear (unformatted) type node.
char XMLNode::parseClearTag(void* px, void* _pClear)
{
	XML* pXML = (XML*)px;
	ALLXMLClearTag pClear = *((ALLXMLClearTag*)_pClear);
	int cbTemp = 0;
	XMLCSTR lpszTemp = nullptr;
	XMLCSTR lpXML = &pXML->lpXML[pXML->nIndex];
	static XMLCSTR docTypeEnd = _CXML("]>");

	// Find the closing tag
	// Seems the <!DOCTYPE need a better treatment so lets handle it
	if (pClear.lpszOpen == XMLClearTags[1].lpszOpen)
	{
		XMLCSTR pCh = lpXML;
		while (*pCh)
		{
			if (*pCh == _CXML('<'))
			{
				pClear.lpszClose = docTypeEnd;
				lpszTemp = xstrstr(lpXML, docTypeEnd);
				break;
			}
			else if (*pCh == _CXML('>'))
			{
				lpszTemp = pCh;
				break;
			}
#ifdef _XMLWIDECHAR
			pCh++;
#else
			pCh += XML_ByteTable[(unsigned char)(*pCh)];
#endif
		}
	}
	else
		lpszTemp = xstrstr(lpXML, pClear.lpszClose);

	if (lpszTemp)
	{
		// Cache the size and increment the index
		cbTemp = (int)(lpszTemp - lpXML);

		pXML->nIndex += cbTemp + (int)xstrlen(pClear.lpszClose);

		// Add the clear node to the current element
		addClear_priv(
			MEMORYINCREASE, stringDup(lpXML, cbTemp), pClear.lpszOpen,
			pClear.lpszClose, -1);
		return 0;
	}

	// If we failed to find the end tag
	pXML->error = eXMLErrorUnmatchedEndClearTag;
	return 1;
}

void XMLNode::exactMemory(XMLNodeData* d)
{
	if (d->pOrder)
		d->pOrder = (int*)realloc(
			d->pOrder, (d->nChild + d->nText + d->nClear) * sizeof(int));
	if (d->pChild)
		d->pChild = (XMLNode*)realloc(d->pChild, d->nChild * sizeof(XMLNode));
	if (d->pAttribute)
		d->pAttribute = (XMLAttribute*)realloc(
			d->pAttribute, d->nAttribute * sizeof(XMLAttribute));
	if (d->pText)
		d->pText = (XMLCSTR*)realloc(d->pText, d->nText * sizeof(XMLSTR));
	if (d->pClear)
		d->pClear = (XMLClear*)realloc(d->pClear, d->nClear * sizeof(XMLClear));
}

char XMLNode::maybeAddTxT(void* pa, XMLCSTR tokenPStr)
{
	XML* pXML = (XML*)pa;
	XMLCSTR lpszText = pXML->lpszText;
	if (!lpszText) return 0;
	if (dropWhiteSpace)
		while (XML_isSPACECHAR(*lpszText) && (lpszText != tokenPStr))
			lpszText++;
	int cbText = (int)(tokenPStr - lpszText);
	if (!cbText)
	{
		pXML->lpszText = nullptr;
		return 0;
	}
	if (dropWhiteSpace)
	{
		cbText--;
		while ((cbText) && XML_isSPACECHAR(lpszText[cbText])) cbText--;
		cbText++;
	}
	if (!cbText)
	{
		pXML->lpszText = nullptr;
		return 0;
	}
	XMLSTR lpt = fromXMLString(lpszText, cbText, pXML);
	if (!lpt) return 1;
	pXML->lpszText = nullptr;
	if (removeCommentsInMiddleOfText && d->nText && d->nClear)
	{
		// if the previous insertion was a comment (<!-- -->) AND
		// if the previous previous insertion was a text then, delete the
		// comment and append the text
		int n = d->nChild + d->nText + d->nClear - 1, *o = d->pOrder;
		if (((o[n] & 3) == eNodeClear) && ((o[n - 1] & 3) == eNodeText))
		{
			int i = o[n] >> 2;
			if (d->pClear[i].lpszOpenTag == XMLClearTags[2].lpszOpen)
			{
				deleteClear(i);
				i = o[n - 1] >> 2;
				n = xstrlen(d->pText[i]);
				int n2 = xstrlen(lpt) + 1;
				d->pText[i] = (XMLSTR)realloc(
					(void*)d->pText[i], (n + n2) * sizeof(XMLCHAR));
				if (!d->pText[i]) return 1;
				memcpy((void*)(d->pText[i] + n), lpt, n2 * sizeof(XMLCHAR));
				free(lpt);
				return 0;
			}
		}
	}
	addText_priv(MEMORYINCREASE, lpt, -1);
	return 0;
}
// private:
// Recursively parse an XML element.
int XMLNode::ParseXMLElement(void* pa)
{
	XML* pXML = (XML*)pa;
	int cbToken;
	enum XMLTokenTypeTag xtype;
	NextToken token;
	XMLCSTR lpszTemp = nullptr;
	int cbTemp = 0;
	char nDeclaration;
	XMLNode pNew;
	enum Status status;  // inside or outside a tag
	enum Attrib attrib = eAttribName;

	assert(pXML);

	// If this is the first call to the function
	if (pXML->nFirst)
	{
		// Assume we are outside of a tag definition
		pXML->nFirst = FALSE;
		status = eOutsideTag;
	}
	else
	{
		// If this is not the first call then we should only be called when
		// inside a tag.
		status = eInsideTag;
	}

	// Iterate through the tokens in the document
	for (;;)
	{
		// Obtain the next token
		token = GetNextToken(pXML, &cbToken, &xtype);

		if (xtype != eTokenError)
		{
			// Check the current status
			switch (status)
			{
				// If we are outside of a tag definition
				case eOutsideTag:

					// Check what type of token we obtained
					switch (xtype)
					{
						// If we have found text or quoted text
						case eTokenText:
						case eTokenCloseTag: /* '>'         */
						case eTokenShortHandClose: /* '/>'        */
						case eTokenQuotedText:
						case eTokenEquals:
							break;

						// If we found a start tag '<' and declarations '<?'
						case eTokenTagStart:
						case eTokenDeclaration:

							// Cache whether this new element is a declaration
							// or not
							nDeclaration = (xtype == eTokenDeclaration);

							// If we have node text then add this to the element
							if (maybeAddTxT(pXML, token.pStr)) return FALSE;

							// Find the name of the tag
							token = GetNextToken(pXML, &cbToken, &xtype);

							// Return an error if we couldn't obtain the next
							// token or
							// it wasnt text
							if (xtype != eTokenText)
							{
								pXML->error = eXMLErrorMissingTagName;
								return FALSE;
							}

							// If we found a new element which is the same as
							// this element then we need to pass this back to
							// the caller..

#ifdef APPROXIMATE_PARSING
							if (d->lpszName &&
								myTagCompare(d->lpszName, token.pStr) == 0)
							{
								// Indicate to the caller that it needs to
								// create a
								// new element.
								pXML->lpNewElement = token.pStr;
								pXML->cbNewElement = cbToken;
								return TRUE;
							}
							else
#endif
							{
								// If the name of the new element differs from
								// the name of
								// the current element we need to add the new
								// element to
								// the current one and recurse
								pNew = addChild_priv(
									MEMORYINCREASE,
									stringDup(token.pStr, cbToken),
									nDeclaration, -1);

								while (!pNew.isEmpty())
								{
									// Callself to process the new node.  If we
									// return
									// FALSE this means we dont have any more
									// processing to do...

									if (!pNew.ParseXMLElement(pXML))
										return FALSE;
									else
									{
										// If the call to recurse this function
										// evented in a end tag specified in XML
										// then
										// we need to unwind the calls to this
										// function until we find the
										// appropriate node
										// (the element name and end tag name
										// must
										// match)
										if (pXML->cbEndTag)
										{
											// If we are back at the root node
											// then we
											// have an unmatched end tag
											if (!d->lpszName)
											{
												pXML->error =
													eXMLErrorUnmatchedEndTag;
												return FALSE;
											}

											// If the end tag matches the name
											// of this
											// element then we only need to
											// unwind
											// once more...

											if (myTagCompare(
													d->lpszName,
													pXML->lpEndTag) == 0)
											{
												pXML->cbEndTag = 0;
											}

											return TRUE;
										}
										else if (pXML->cbNewElement)
										{
											// If the call indicated a new
											// element is to
											// be created on THIS element.

											// If the name of this element
											// matches the
											// name of the element we need to
											// create
											// then we need to return to the
											// caller
											// and let it process the element.

											if (myTagCompare(
													d->lpszName,
													pXML->lpNewElement) == 0)
											{
												return TRUE;
											}

											// Add the new element and recurse
											pNew = addChild_priv(
												MEMORYINCREASE,
												stringDup(
													pXML->lpNewElement,
													pXML->cbNewElement),
												0, -1);
											pXML->cbNewElement = 0;
										}
										else
										{
											// If we didn't have a new element
											// to create
											pNew = emptyXMLNode;
										}
									}
								}
							}
							break;

						// If we found an end tag
						case eTokenTagEnd:

							// If we have node text then add this to the element
							if (maybeAddTxT(pXML, token.pStr)) return FALSE;

							// Find the name of the end tag
							token = GetNextToken(pXML, &cbTemp, &xtype);

							// The end tag should be text
							if (xtype != eTokenText)
							{
								pXML->error = eXMLErrorMissingEndTagName;
								return FALSE;
							}
							lpszTemp = token.pStr;

							// After the end tag we should find a closing tag
							token = GetNextToken(pXML, &cbToken, &xtype);
							if (xtype != eTokenCloseTag)
							{
								pXML->error = eXMLErrorMissingEndTagName;
								return FALSE;
							}
							pXML->lpszText = pXML->lpXML + pXML->nIndex;

							// We need to return to the previous caller.  If the
							// name
							// of the tag cannot be found we need to keep
							// returning to
							// caller until we find a match
							if (myTagCompare(d->lpszName, lpszTemp) != 0)
#ifdef STRICT_PARSING
							{
								pXML->error = eXMLErrorUnmatchedEndTag;
								pXML->nIndexMissigEndTag = pXML->nIndex;
								return FALSE;
							}
#else
							{
								pXML->error = eXMLErrorMissingEndTag;
								pXML->nIndexMissigEndTag = pXML->nIndex;
								pXML->lpEndTag = lpszTemp;
								pXML->cbEndTag = cbTemp;
							}
#endif

							// Return to the caller
							exactMemory(d);
							return TRUE;

						// If we found a clear (unformatted) token
						case eTokenClear:
							// If we have node text then add this to the element
							if (maybeAddTxT(pXML, token.pStr)) return FALSE;
							if (parseClearTag(pXML, token.pClr)) return FALSE;
							pXML->lpszText = pXML->lpXML + pXML->nIndex;
							break;

						default:
							break;
					}
					break;

				// If we are inside a tag definition we need to search for
				// attributes
				case eInsideTag:

					// Check what part of the attribute (name, equals, value) we
					// are looking for.
					switch (attrib)
					{
						// If we are looking for a new attribute
						case eAttribName:

							// Check what the current token type is
							switch (xtype)
							{
								// If the current type is text...
								// Eg.  'attribute'
								case eTokenText:
									// Cache the token then indicate that we are
									// next to
									// look for the equals
									lpszTemp = token.pStr;
									cbTemp = cbToken;
									attrib = eAttribEquals;
									break;

								// If we found a closing tag...
								// Eg.  '>'
								case eTokenCloseTag:
									// We are now outside the tag
									status = eOutsideTag;
									pXML->lpszText = pXML->lpXML + pXML->nIndex;
									break;

								// If we found a short hand '/>' closing tag
								// then we can
								// return to the caller
								case eTokenShortHandClose:
									exactMemory(d);
									pXML->lpszText = pXML->lpXML + pXML->nIndex;
									return TRUE;

								// Errors...
								case eTokenQuotedText: /* '"SomeText"'   */
								case eTokenTagStart: /* '<'            */
								case eTokenTagEnd: /* '</'           */
								case eTokenEquals: /* '='            */
								case eTokenDeclaration: /* '<?'           */
								case eTokenClear:
									pXML->error = eXMLErrorUnexpectedToken;
									return FALSE;
								default:
									break;
							}
							break;

						// If we are looking for an equals
						case eAttribEquals:
							// Check what the current token type is
							switch (xtype)
							{
								// If the current type is text...
								// Eg.  'Attribute AnotherAttribute'
								case eTokenText:
									// Add the unvalued attribute to the list
									addAttribute_priv(
										MEMORYINCREASE,
										stringDup(lpszTemp, cbTemp), nullptr);
									// Cache the token then indicate.  We are
									// next to
									// look for the equals attribute
									lpszTemp = token.pStr;
									cbTemp = cbToken;
									break;

								// If we found a closing tag 'Attribute >' or a
								// short hand
								// closing tag 'Attribute />'
								case eTokenShortHandClose:
								case eTokenCloseTag:
									// If we are a declaration element '<?' then
									// we need
									// to remove extra closing '?' if it exists
									pXML->lpszText = pXML->lpXML + pXML->nIndex;

									if (d->isDeclaration &&
										(lpszTemp[cbTemp - 1]) == _CXML('?'))
									{
										cbTemp--;
										if (d->pParent && d->pParent->pParent)
											xtype = eTokenShortHandClose;
									}

									if (cbTemp)
									{
										// Add the unvalued attribute to the
										// list
										addAttribute_priv(
											MEMORYINCREASE,
											stringDup(lpszTemp, cbTemp),
											nullptr);
									}

									// If this is the end of the tag then return
									// to the caller
									if (xtype == eTokenShortHandClose)
									{
										exactMemory(d);
										return TRUE;
									}

									// We are now outside the tag
									status = eOutsideTag;
									break;

								// If we found the equals token...
								// Eg.  'Attribute ='
								case eTokenEquals:
									// Indicate that we next need to search for
									// the value
									// for the attribute
									attrib = eAttribValue;
									break;

								// Errors...
								case eTokenQuotedText: /* 'Attribute
														  "InvalidAttr"'*/
								case eTokenTagStart: /* 'Attribute <' */
								case eTokenTagEnd: /* 'Attribute </' */
								case eTokenDeclaration: /* 'Attribute <?' */
								case eTokenClear:
									pXML->error = eXMLErrorUnexpectedToken;
									return FALSE;
								default:
									break;
							}
							break;

						// If we are looking for an attribute value
						case eAttribValue:
							// Check what the current token type is
							switch (xtype)
							{
								// If the current type is text or quoted text...
								// Eg.  'Attribute = "Value"' or 'Attribute =
								// Value' or
								// 'Attribute = 'Value''.
								case eTokenText:
								case eTokenQuotedText:
									// If we are a declaration element '<?' then
									// we need
									// to remove extra closing '?' if it exists
									if (d->isDeclaration &&
										(token.pStr[cbToken - 1]) == _CXML('?'))
									{
										cbToken--;
									}

									if (cbTemp)
									{
										// Add the valued attribute to the list
										if (xtype == eTokenQuotedText)
										{
											token.pStr++;
											cbToken -= 2;
										}
										XMLSTR attrVal = (XMLSTR)token.pStr;
										if (attrVal)
										{
											attrVal = fromXMLString(
												attrVal, cbToken, pXML);
											if (!attrVal) return FALSE;
										}
										addAttribute_priv(
											MEMORYINCREASE,
											stringDup(lpszTemp, cbTemp),
											attrVal);
									}

									// Indicate we are searching for a new
									// attribute
									attrib = eAttribName;
									break;

								// Errors...
								case eTokenTagStart: /* 'Attr = <'          */
								case eTokenTagEnd: /* 'Attr = </'         */
								case eTokenCloseTag: /* 'Attr = >'          */
								case eTokenShortHandClose: /* "Attr = />" */
								case eTokenEquals: /* 'Attr = ='          */
								case eTokenDeclaration: /* 'Attr = <?' */
								case eTokenClear:
									pXML->error = eXMLErrorUnexpectedToken;
									return FALSE;
									break;
								default:
									break;
							}
					}
			}
		}
		// If we failed to obtain the next token
		else
		{
			if ((!d->isDeclaration) && (d->pParent))
			{
#ifdef STRICT_PARSING
				pXML->error = eXMLErrorUnmatchedEndTag;
#else
				pXML->error = eXMLErrorMissingEndTag;
#endif
				pXML->nIndexMissigEndTag = pXML->nIndex;
			}
			maybeAddTxT(pXML, pXML->lpXML + pXML->nIndex);
			return FALSE;
		}
	}
}

// Count the number of lines and columns in an XML string.
static void CountLinesAndColumns(XMLCSTR lpXML, int nUpto, XMLResults* pResults)
{
	XMLCHAR ch;
	assert(lpXML);
	assert(pResults);

	struct XML xml = {lpXML,   lpXML, 0,	   0, eXMLErrorNone,
					  nullptr, 0,	 nullptr, 0, TRUE};

	pResults->nLine = 1;
	pResults->nColumn = 1;
	while (xml.nIndex < nUpto)
	{
		ch = getNextChar(&xml);
		if (ch != _CXML('\n'))
			pResults->nColumn++;
		else
		{
			pResults->nLine++;
			pResults->nColumn = 1;
		}
	}
}

// Parse XML and return the root element.
XMLNode XMLNode::parseString(XMLCSTR lpszXML, XMLCSTR tag, XMLResults* pResults)
{
	if (!lpszXML)
	{
		if (pResults)
		{
			pResults->error = eXMLErrorNoElements;
			pResults->nLine = 0;
			pResults->nColumn = 0;
		}
		return emptyXMLNode;
	}

	XMLNode xnode(nullptr, nullptr, FALSE);
	struct XML xml = {lpszXML, lpszXML, 0,		 0, eXMLErrorNone,
					  nullptr, 0,		nullptr, 0, TRUE};

	// Create header element
	xnode.ParseXMLElement(&xml);
	enum XMLError error = xml.error;
	if (!xnode.nChildNode()) error = eXMLErrorNoXMLTagFound;
	if ((xnode.nChildNode() == 1) && (xnode.nElement() == 1))
		xnode = xnode.getChildNode();  // skip the empty node

	// If no error occurred
	if ((error == eXMLErrorNone) || (error == eXMLErrorMissingEndTag) ||
		(error == eXMLErrorNoXMLTagFound))
	{
		XMLCSTR name = xnode.getName();
		if (tag && (*tag) && ((!name) || (xstricmp(name, tag))))
		{
			xnode = xnode.getChildNode(tag);
			if (xnode.isEmpty())
			{
				if (pResults)
				{
					pResults->error = eXMLErrorFirstTagNotFound;
					pResults->nLine = 0;
					pResults->nColumn = 0;
				}
				return emptyXMLNode;
			}
		}
	}
	else
	{
		// Cleanup: this will destroy all the nodes
		xnode = emptyXMLNode;
	}

	// If we have been given somewhere to place results
	if (pResults)
	{
		pResults->error = error;

		// If we have an error
		if (error != eXMLErrorNone)
		{
			if (error == eXMLErrorMissingEndTag)
				xml.nIndex = xml.nIndexMissigEndTag;
			// Find which line and column it starts on.
			CountLinesAndColumns(xml.lpXML, xml.nIndex, pResults);
		}
	}
	return xnode;
}

XMLNode XMLNode::parseFile(XMLCSTR filename, XMLCSTR tag, XMLResults* pResults)
{
	if (pResults)
	{
		pResults->nLine = 0;
		pResults->nColumn = 0;
	}
	FILE* f = xfopen(filename, _CXML("rb"));
	if (f == nullptr)
	{
		if (pResults) pResults->error = eXMLErrorFileNotFound;
		return emptyXMLNode;
	}
	fseek(f, 0, SEEK_END);
	int l = ftell(f), headerSz = 0;
	if (!l)
	{
		if (pResults) pResults->error = eXMLErrorEmpty;
		fclose(f);
		return emptyXMLNode;
	}
	fseek(f, 0, SEEK_SET);
	auto* buf = (unsigned char*)malloc(l + 4);
	int really_read = (int)fread(buf, 1, l, f);  // JLBC
	if (really_read != l) buf[0] = '\0';
	fclose(f);
	buf[l] = 0;
	buf[l + 1] = 0;
	buf[l + 2] = 0;
	buf[l + 3] = 0;
#ifdef _XMLWIDECHAR
	if (guessWideCharChars)
	{
		if (!myIsTextWideChar(buf, l))
		{
			XMLNode::XMLCharEncoding ce = XMLNode::char_encoding_legacy;
			if ((buf[0] == 0xef) && (buf[1] == 0xbb) && (buf[2] == 0xbf))
			{
				headerSz = 3;
				ce = XMLNode::char_encoding_UTF8;
			}
			XMLSTR b2 =
				myMultiByteToWideChar((const char*)(buf + headerSz), ce);
			free(buf);
			buf = (unsigned char*)b2;
			headerSz = 0;
		}
		else
		{
			if ((buf[0] == 0xef) && (buf[1] == 0xff)) headerSz = 2;
			if ((buf[0] == 0xff) && (buf[1] == 0xfe)) headerSz = 2;
		}
	}
#else
	if (guessWideCharChars)
	{
		if (myIsTextWideChar(buf, l))
		{
			if ((buf[0] == 0xef) && (buf[1] == 0xff)) headerSz = 2;
			if ((buf[0] == 0xff) && (buf[1] == 0xfe)) headerSz = 2;
			char* b2 = myWideCharToMultiByte((const wchar_t*)(buf + headerSz));
			free(buf);
			buf = (unsigned char*)b2;
			headerSz = 0;
		}
		else
		{
			if ((buf[0] == 0xef) && (buf[1] == 0xbb) && (buf[2] == 0xbf))
				headerSz = 3;
		}
	}
#endif

	if (!buf)
	{
		if (pResults) pResults->error = eXMLErrorCharConversionError;
		return emptyXMLNode;
	}
	XMLNode x = parseString((XMLSTR)(buf + headerSz), tag, pResults);
	free(buf);
	return x;
}

static inline void charmemset(XMLSTR dest, XMLCHAR c, int l)
{
	while (l--) *(dest++) = c;
}
// private:
// Creates an user friendly XML string from a given element with
// appropriate white space and carriage returns.
//
// This recurses through all subnodes then adds contents of the nodes to the
// string.
int XMLNode::CreateXMLStringR(
	XMLNodeData* pEntry, XMLSTR lpszMarker, int nFormat)
{
	int nResult = 0;
	int cb = nFormat < 0 ? 0 : nFormat;
	int cbElement;
	int nChildFormat = -1;
	int nElementI = pEntry->nChild + pEntry->nText + pEntry->nClear;
	int i, j;
	if ((nFormat >= 0) && (nElementI == 1) && (pEntry->nText == 1) &&
		(!pEntry->isDeclaration))
		nFormat = -2;

	assert(pEntry);

#define LENSTR(lpsz) (lpsz ? xstrlen(lpsz) : 0)

	// If the element has no name then assume this is the head node.
	cbElement = (int)LENSTR(pEntry->lpszName);

	if (cbElement)
	{
		// "<elementname "
		if (lpszMarker)
		{
			if (cb) charmemset(lpszMarker, INDENTCHAR, cb);
			nResult = cb;
			lpszMarker[nResult++] = _CXML('<');
			if (pEntry->isDeclaration) lpszMarker[nResult++] = _CXML('?');
			xstrcpy(&lpszMarker[nResult], pEntry->lpszName);
			nResult += cbElement;
			lpszMarker[nResult++] = _CXML(' ');
		}
		else
		{
			nResult += cbElement + 2 + cb;
			if (pEntry->isDeclaration) nResult++;
		}

		// Enumerate attributes and add them to the string
		XMLAttribute* pAttr = pEntry->pAttribute;
		for (i = 0; i < pEntry->nAttribute; i++)
		{
			// "Attrib
			cb = (int)LENSTR(pAttr->lpszName);
			if (cb)
			{
				if (lpszMarker) xstrcpy(&lpszMarker[nResult], pAttr->lpszName);
				nResult += cb;
				// "Attrib=Value "
				if (pAttr->lpszValue)
				{
					cb =
						(int)ToXMLStringTool::lengthXMLString(pAttr->lpszValue);
					if (lpszMarker)
					{
						lpszMarker[nResult] = _CXML('=');
						lpszMarker[nResult + 1] = _CXML('"');
						if (cb)
							ToXMLStringTool::toXMLUnSafe(
								&lpszMarker[nResult + 2], pAttr->lpszValue);
						lpszMarker[nResult + cb + 2] = _CXML('"');
					}
					nResult += cb + 3;
				}
				if (lpszMarker) lpszMarker[nResult] = _CXML(' ');
				nResult++;
			}
			pAttr++;
		}

		if (pEntry->isDeclaration)
		{
			if (lpszMarker)
			{
				lpszMarker[nResult - 1] = _CXML('?');
				lpszMarker[nResult] = _CXML('>');
			}
			nResult++;
			if (nFormat != -1)
			{
				if (lpszMarker) lpszMarker[nResult] = _CXML('\n');
				nResult++;
			}
		}
		else
			// If there are child nodes we need to terminate the start tag
			if (nElementI)
		{
			if (lpszMarker) lpszMarker[nResult - 1] = _CXML('>');
			if (nFormat >= 0)
			{
				if (lpszMarker) lpszMarker[nResult] = _CXML('\n');
				nResult++;
			}
		}
		else
			nResult--;
	}

	// Calculate the child format for when we recurse.  This is used to
	// determine the number of spaces used for prefixes.
	if (nFormat != -1)
	{
		if (cbElement && (!pEntry->isDeclaration))
			nChildFormat = nFormat + 1;
		else
			nChildFormat = nFormat;
	}

	// Enumerate through remaining children
	for (i = 0; i < nElementI; i++)
	{
		j = pEntry->pOrder[i];
		switch ((XMLElementType)(j & 3))
		{
			// Text nodes
			case eNodeText:
			{
				// "Text"
				XMLCSTR pChild = pEntry->pText[j >> 2];
				cb = (int)ToXMLStringTool::lengthXMLString(pChild);
				if (cb)
				{
					if (nFormat >= 0)
					{
						if (lpszMarker)
						{
							charmemset(
								&lpszMarker[nResult], INDENTCHAR, nFormat + 1);
							ToXMLStringTool::toXMLUnSafe(
								&lpszMarker[nResult + nFormat + 1], pChild);
							lpszMarker[nResult + nFormat + 1 + cb] =
								_CXML('\n');
						}
						nResult += cb + nFormat + 2;
					}
					else
					{
						if (lpszMarker)
							ToXMLStringTool::toXMLUnSafe(
								&lpszMarker[nResult], pChild);
						nResult += cb;
					}
				}
				break;
			}

			// Clear type nodes
			case eNodeClear:
			{
				XMLClear* pChild = pEntry->pClear + (j >> 2);
				// "OpenTag"
				cb = (int)LENSTR(pChild->lpszOpenTag);
				if (cb)
				{
					if (nFormat != -1)
					{
						if (lpszMarker)
						{
							charmemset(
								&lpszMarker[nResult], INDENTCHAR, nFormat + 1);
							xstrcpy(
								&lpszMarker[nResult + nFormat + 1],
								pChild->lpszOpenTag);
						}
						nResult += cb + nFormat + 1;
					}
					else
					{
						if (lpszMarker)
							xstrcpy(&lpszMarker[nResult], pChild->lpszOpenTag);
						nResult += cb;
					}
				}

				// "OpenTag Value"
				cb = (int)LENSTR(pChild->lpszValue);
				if (cb)
				{
					if (lpszMarker)
						xstrcpy(&lpszMarker[nResult], pChild->lpszValue);
					nResult += cb;
				}

				// "OpenTag Value CloseTag"
				cb = (int)LENSTR(pChild->lpszCloseTag);
				if (cb)
				{
					if (lpszMarker)
						xstrcpy(&lpszMarker[nResult], pChild->lpszCloseTag);
					nResult += cb;
				}

				if (nFormat != -1)
				{
					if (lpszMarker) lpszMarker[nResult] = _CXML('\n');
					nResult++;
				}
				break;
			}

			// Element nodes
			case eNodeChild:
			{
				// Recursively add child nodes
				nResult += CreateXMLStringR(
					pEntry->pChild[j >> 2].d,
					lpszMarker ? lpszMarker + nResult : nullptr, nChildFormat);
				break;
			}
			default:
				break;
		}
	}

	if ((cbElement) && (!pEntry->isDeclaration))
	{
		// If we have child entries we need to use long XML notation for
		// closing the element - "<elementname>blah blah blah</elementname>"
		if (nElementI)
		{
			// "</elementname>\0"
			if (lpszMarker)
			{
				if (nFormat >= 0)
				{
					charmemset(&lpszMarker[nResult], INDENTCHAR, nFormat);
					nResult += nFormat;
				}

				lpszMarker[nResult] = _CXML('<');
				lpszMarker[nResult + 1] = _CXML('/');
				nResult += 2;
				xstrcpy(&lpszMarker[nResult], pEntry->lpszName);
				nResult += cbElement;

				lpszMarker[nResult] = _CXML('>');
				if (nFormat == -1)
					nResult++;
				else
				{
					lpszMarker[nResult + 1] = _CXML('\n');
					nResult += 2;
				}
			}
			else
			{
				if (nFormat >= 0)
					nResult += cbElement + 4 + nFormat;
				else if (nFormat == -1)
					nResult += cbElement + 3;
				else
					nResult += cbElement + 4;
			}
		}
		else
		{
			// If there are no children we can use shorthand XML notation -
			// "<elementname/>"
			// "/>\0"
			if (lpszMarker)
			{
				lpszMarker[nResult] = _CXML('/');
				lpszMarker[nResult + 1] = _CXML('>');
				if (nFormat != -1) lpszMarker[nResult + 2] = _CXML('\n');
			}
			nResult += nFormat == -1 ? 2 : 3;
		}
	}

	return nResult;
}

#undef LENSTR

// Create an XML string
// @param       int nFormat             - 0 if no formatting is required
//                                        otherwise nonzero for formatted text
//                                        with carriage returns and indentation.
// @param       int *pnSize             - [out] pointer to the size of the
//                                        returned string not including the
//                                        nullptr terminator.
// @return      XMLSTR                  - Allocated XML string, you must free
//                                        this with free().
XMLSTR XMLNode::createXMLString(int nFormat, int* pnSize) const
{
	if (!d)
	{
		if (pnSize) *pnSize = 0;
		return nullptr;
	}

	XMLSTR lpszResult = nullptr;
	int cbStr;

	// Recursively Calculate the size of the XML string
	if (!dropWhiteSpace) nFormat = 0;
	nFormat = nFormat ? 0 : -1;
	cbStr = CreateXMLStringR(d, nullptr, nFormat);
	// Alllocate memory for the XML string + the nullptr terminator and
	// create the recursively XML string.
	lpszResult = (XMLSTR)malloc((cbStr + 1) * sizeof(XMLCHAR));
	CreateXMLStringR(d, lpszResult, nFormat);
	lpszResult[cbStr] = _CXML('\0');
	if (pnSize) *pnSize = cbStr;
	return lpszResult;
}

int XMLNode::detachFromParent(XMLNodeData* d)
{
	XMLNode* pa = d->pParent->pChild;
	int i = 0;
	while (((void*)(pa[i].d)) != ((void*)d)) i++;
	d->pParent->nChild--;
	if (d->pParent->nChild)
		memmove(pa + i, pa + i + 1, (d->pParent->nChild - i) * sizeof(XMLNode));
	else
	{
		free(pa);
		d->pParent->pChild = nullptr;
	}
	return removeOrderElement(d->pParent, eNodeChild, i);
}

XMLNode::~XMLNode()
{
	if (!d) return;
	d->ref_count--;
	emptyTheNode(0);
}
void XMLNode::deleteNodeContent()
{
	if (!d) return;
	if (d->pParent)
	{
		detachFromParent(d);
		d->pParent = nullptr;
		d->ref_count--;
	}
	emptyTheNode(1);
}
void XMLNode::emptyTheNode(char force)
{
	XMLNodeData* dd = d;  // warning: must stay this way!
	if ((dd->ref_count == 0) || force)
	{
		if (d->pParent) detachFromParent(d);
		int i;
		XMLNode* pc;
		for (i = 0; i < dd->nChild; i++)
		{
			pc = dd->pChild + i;
			pc->d->pParent = nullptr;
			pc->d->ref_count--;
			pc->emptyTheNode(force);
		}
		myFree(dd->pChild);
		for (i = 0; i < dd->nText; i++) free((void*)dd->pText[i]);
		myFree(dd->pText);
		for (i = 0; i < dd->nClear; i++) free((void*)dd->pClear[i].lpszValue);
		myFree(dd->pClear);
		for (i = 0; i < dd->nAttribute; i++)
		{
			free((void*)dd->pAttribute[i].lpszName);
			if (dd->pAttribute[i].lpszValue)
				free((void*)dd->pAttribute[i].lpszValue);
		}
		myFree(dd->pAttribute);
		myFree(dd->pOrder);
		myFree((void*)dd->lpszName);
		dd->nChild = 0;
		dd->nText = 0;
		dd->nClear = 0;
		dd->nAttribute = 0;
		dd->pChild = nullptr;
		dd->pText = nullptr;
		dd->pClear = nullptr;
		dd->pAttribute = nullptr;
		dd->pOrder = nullptr;
		dd->lpszName = nullptr;
		dd->pParent = nullptr;
	}
	if (dd->ref_count == 0)
	{
		free(dd);
		d = nullptr;
	}
}

XMLNode& XMLNode::operator=(const XMLNode& A)
{
	// shallow copy
	if (this != &A)
	{
		if (d)
		{
			d->ref_count--;
			emptyTheNode(0);
		}
		d = A.d;
		if (d) (d->ref_count)++;
	}
	return *this;
}

XMLNode::XMLNode(const XMLNode& A)
{
	// shallow copy
	d = A.d;
	if (d) (d->ref_count)++;
}

XMLNode XMLNode::deepCopy() const
{
	if (!d) return XMLNode::emptyXMLNode;
	XMLNode x(nullptr, stringDup(d->lpszName), d->isDeclaration);
	XMLNodeData* p = x.d;
	int n = d->nAttribute;
	if (n)
	{
		p->nAttribute = n;
		p->pAttribute = (XMLAttribute*)malloc(n * sizeof(XMLAttribute));
		while (n--)
		{
			p->pAttribute[n].lpszName = stringDup(d->pAttribute[n].lpszName);
			p->pAttribute[n].lpszValue = stringDup(d->pAttribute[n].lpszValue);
		}
	}
	if (d->pOrder)
	{
		n = (d->nChild + d->nText + d->nClear) * sizeof(int);
		p->pOrder = (int*)malloc(n);
		memcpy(p->pOrder, d->pOrder, n);
	}
	n = d->nText;
	if (n)
	{
		p->nText = n;
		p->pText = (XMLCSTR*)malloc(n * sizeof(XMLCSTR));
		while (n--) p->pText[n] = stringDup(d->pText[n]);
	}
	n = d->nClear;
	if (n)
	{
		p->nClear = n;
		p->pClear = (XMLClear*)malloc(n * sizeof(XMLClear));
		while (n--)
		{
			p->pClear[n].lpszCloseTag = d->pClear[n].lpszCloseTag;
			p->pClear[n].lpszOpenTag = d->pClear[n].lpszOpenTag;
			p->pClear[n].lpszValue = stringDup(d->pClear[n].lpszValue);
		}
	}
	n = d->nChild;
	if (n)
	{
		p->nChild = n;
		p->pChild = (XMLNode*)malloc(n * sizeof(XMLNode));
		while (n--)
		{
			p->pChild[n].d = nullptr;
			p->pChild[n] = d->pChild[n].deepCopy();
			p->pChild[n].d->pParent = p;
		}
	}
	return x;
}

XMLNode XMLNode::addChild(XMLNode childNode, int pos)
{
	XMLNodeData* dc = childNode.d;
	if ((!dc) || (!d)) return childNode;
	if (!dc->lpszName)
	{
		// this is a root node: todo: correct fix
		int j = pos;
		while (dc->nChild)
		{
			addChild(dc->pChild[0], j);
			if (pos >= 0) j++;
		}
		return childNode;
	}
	if (dc->pParent)
	{
		if ((detachFromParent(dc) <= pos) && (dc->pParent == d)) pos--;
	}
	else
		dc->ref_count++;
	dc->pParent = d;
	//     int nc=d->nChild;
	//     d->pChild=(XMLNode*)myRealloc(d->pChild,(nc+1),memoryIncrease,sizeof(XMLNode));
	d->pChild = (XMLNode*)addToOrder(
		0, &pos, d->nChild, d->pChild, sizeof(XMLNode), eNodeChild);
	d->pChild[pos].d = dc;
	d->nChild++;
	return childNode;
}

void XMLNode::deleteAttribute(int i)
{
	if ((!d) || (i < 0) || (i >= d->nAttribute)) return;
	d->nAttribute--;
	XMLAttribute* p = d->pAttribute + i;
	free((void*)p->lpszName);
	if (p->lpszValue) free((void*)p->lpszValue);
	if (d->nAttribute)
		memmove(p, p + 1, (d->nAttribute - i) * sizeof(XMLAttribute));
	else
	{
		free(p);
		d->pAttribute = nullptr;
	}
}

void XMLNode::deleteAttribute(XMLAttribute* a)
{
	if (a) deleteAttribute(a->lpszName);
}
void XMLNode::deleteAttribute(XMLCSTR lpszName)
{
	int j = 0;
	getAttribute(lpszName, &j);
	if (j) deleteAttribute(j - 1);
}

XMLAttribute* XMLNode::updateAttribute_WOSD(
	XMLSTR lpszNewValue, XMLSTR lpszNewName, int i)
{
	if (!d)
	{
		if (lpszNewValue) free(lpszNewValue);
		if (lpszNewName) free(lpszNewName);
		return nullptr;
	}
	if (i >= d->nAttribute)
	{
		if (lpszNewName) return addAttribute_WOSD(lpszNewName, lpszNewValue);
		return nullptr;
	}
	XMLAttribute* p = d->pAttribute + i;
	if (p->lpszValue && p->lpszValue != lpszNewValue) free((void*)p->lpszValue);
	p->lpszValue = lpszNewValue;
	if (lpszNewName && p->lpszName != lpszNewName)
	{
		free((void*)p->lpszName);
		p->lpszName = lpszNewName;
	};
	return p;
}

XMLAttribute* XMLNode::updateAttribute_WOSD(
	XMLAttribute* newAttribute, XMLAttribute* oldAttribute)
{
	if (oldAttribute)
		return updateAttribute_WOSD(
			(XMLSTR)newAttribute->lpszValue, (XMLSTR)newAttribute->lpszName,
			oldAttribute->lpszName);
	return addAttribute_WOSD(
		(XMLSTR)newAttribute->lpszName, (XMLSTR)newAttribute->lpszValue);
}

XMLAttribute* XMLNode::updateAttribute_WOSD(
	XMLSTR lpszNewValue, XMLSTR lpszNewName, XMLCSTR lpszOldName)
{
	int j = 0;
	getAttribute(lpszOldName, &j);
	if (j)
		return updateAttribute_WOSD(lpszNewValue, lpszNewName, j - 1);
	else
	{
		if (lpszNewName)
			return addAttribute_WOSD(lpszNewName, lpszNewValue);
		else
			return addAttribute_WOSD(stringDup(lpszOldName), lpszNewValue);
	}
}

int XMLNode::indexText(XMLCSTR lpszValue) const
{
	if (!d) return -1;
	int i, l = d->nText;
	if (!lpszValue)
	{
		if (l) return 0;
		return -1;
	}
	XMLCSTR* p = d->pText;
	for (i = 0; i < l; i++)
		if (lpszValue == p[i]) return i;
	return -1;
}

void XMLNode::deleteText(int i)
{
	if ((!d) || (i < 0) || (i >= d->nText)) return;
	d->nText--;
	XMLCSTR* p = d->pText + i;
	free((void*)*p);
	if (d->nText)
		memmove(p, p + 1, (d->nText - i) * sizeof(XMLCSTR));
	else
	{
		free(p);
		d->pText = nullptr;
	}
	removeOrderElement(d, eNodeText, i);
}

void XMLNode::deleteText(XMLCSTR lpszValue)
{
	deleteText(indexText(lpszValue));
}

XMLCSTR XMLNode::updateText_WOSD(XMLSTR lpszNewValue, int i)
{
	if (!d)
	{
		if (lpszNewValue) free(lpszNewValue);
		return nullptr;
	}
	if (i >= d->nText) return addText_WOSD(lpszNewValue);
	XMLCSTR* p = d->pText + i;
	if (*p != lpszNewValue)
	{
		free((void*)*p);
		*p = lpszNewValue;
	}
	return lpszNewValue;
}

XMLCSTR XMLNode::updateText_WOSD(XMLSTR lpszNewValue, XMLCSTR lpszOldValue)
{
	if (!d)
	{
		if (lpszNewValue) free(lpszNewValue);
		return nullptr;
	}
	int i = indexText(lpszOldValue);
	if (i >= 0) return updateText_WOSD(lpszNewValue, i);
	return addText_WOSD(lpszNewValue);
}

void XMLNode::deleteClear(int i)
{
	if ((!d) || (i < 0) || (i >= d->nClear)) return;
	d->nClear--;
	XMLClear* p = d->pClear + i;
	free((void*)p->lpszValue);
	if (d->nClear)
		memmove(p, p + 1, (d->nClear - i) * sizeof(XMLClear));
	else
	{
		free(p);
		d->pClear = nullptr;
	}
	removeOrderElement(d, eNodeClear, i);
}

int XMLNode::indexClear(XMLCSTR lpszValue) const
{
	if (!d) return -1;
	int i, l = d->nClear;
	if (!lpszValue)
	{
		if (l) return 0;
		return -1;
	}
	XMLClear* p = d->pClear;
	for (i = 0; i < l; i++)
		if (lpszValue == p[i].lpszValue) return i;
	return -1;
}

void XMLNode::deleteClear(XMLCSTR lpszValue)
{
	deleteClear(indexClear(lpszValue));
}
void XMLNode::deleteClear(XMLClear* a)
{
	if (a) deleteClear(a->lpszValue);
}

XMLClear* XMLNode::updateClear_WOSD(XMLSTR lpszNewContent, int i)
{
	if (!d)
	{
		if (lpszNewContent) free(lpszNewContent);
		return nullptr;
	}
	if (i >= d->nClear) return addClear_WOSD(lpszNewContent);
	XMLClear* p = d->pClear + i;
	if (lpszNewContent != p->lpszValue)
	{
		free((void*)p->lpszValue);
		p->lpszValue = lpszNewContent;
	}
	return p;
}

XMLClear* XMLNode::updateClear_WOSD(XMLSTR lpszNewContent, XMLCSTR lpszOldValue)
{
	if (!d)
	{
		if (lpszNewContent) free(lpszNewContent);
		return nullptr;
	}
	int i = indexClear(lpszOldValue);
	if (i >= 0) return updateClear_WOSD(lpszNewContent, i);
	return addClear_WOSD(lpszNewContent);
}

XMLClear* XMLNode::updateClear_WOSD(XMLClear* newP, XMLClear* oldP)
{
	if (oldP)
		return updateClear_WOSD(
			(XMLSTR)newP->lpszValue, (XMLSTR)oldP->lpszValue);
	return nullptr;
}

int XMLNode::nChildNode(XMLCSTR name) const
{
	if (!d) return 0;
	int i, j = 0, n = d->nChild;
	XMLNode* pc = d->pChild;
	for (i = 0; i < n; i++)
	{
		if (xstricmp(pc->d->lpszName, name) == 0) j++;
		pc++;
	}
	return j;
}

XMLNode XMLNode::getChildNode(XMLCSTR name, int* j) const
{
	if (!d) return emptyXMLNode;
	int i = 0, n = d->nChild;
	if (j) i = *j;
	XMLNode* pc = d->pChild + i;
	for (; i < n; i++)
	{
		if (!xstricmp(pc->d->lpszName, name))
		{
			if (j) *j = i + 1;
			return *pc;
		}
		pc++;
	}
	return emptyXMLNode;
}

XMLNode XMLNode::getChildNode(XMLCSTR name, int j) const
{
	if (!d) return emptyXMLNode;
	if (j >= 0)
	{
		int i = 0;
		while (j-- > 0) getChildNode(name, &i);
		return getChildNode(name, &i);
	}
	int i = d->nChild;
	while (i--)
		if (!xstricmp(name, d->pChild[i].d->lpszName)) break;
	if (i < 0) return emptyXMLNode;
	return getChildNode(i);
}

XMLNode XMLNode::getChildNodeByPath(
	XMLCSTR _path, char createMissing, XMLCHAR sep)
{
	XMLSTR path = stringDup(_path);
	XMLNode x = getChildNodeByPath(path, createMissing, sep);
	if (path) free(path);
	return x;
}

XMLNode XMLNode::getChildNodeByPath(
	XMLSTR path, char createIfMissing, XMLCHAR sep)
{
	if ((!path) || (!(*path))) return *this;
	XMLNode xn, xbase = *this;
	XMLCHAR *tend1, sepString[2];
	sepString[0] = sep;
	sepString[1] = 0;
	tend1 = xstrstr(path, sepString);
	while (tend1)
	{
		*tend1 = 0;
		xn = xbase.getChildNode(path);
		if (xn.isEmpty())
		{
			if (createIfMissing)
				xn = xbase.addChild(path);
			else
				return XMLNode::emptyXMLNode;
		}
		xbase = xn;
		path = tend1 + 1;
		tend1 = xstrstr(path, sepString);
	}
	xn = xbase.getChildNode(path);
	if (xn.isEmpty() && createIfMissing) xn = xbase.addChild(path);
	return xn;
}

XMLElementPosition XMLNode::positionOfText(int i) const
{
	if (i >= d->nText) i = d->nText - 1;
	return findPosition(d, i, eNodeText);
}
XMLElementPosition XMLNode::positionOfClear(int i) const
{
	if (i >= d->nClear) i = d->nClear - 1;
	return findPosition(d, i, eNodeClear);
}
XMLElementPosition XMLNode::positionOfChildNode(int i) const
{
	if (i >= d->nChild) i = d->nChild - 1;
	return findPosition(d, i, eNodeChild);
}
XMLElementPosition XMLNode::positionOfText(XMLCSTR lpszValue) const
{
	return positionOfText(indexText(lpszValue));
}
XMLElementPosition XMLNode::positionOfClear(XMLCSTR lpszValue) const
{
	return positionOfClear(indexClear(lpszValue));
}
XMLElementPosition XMLNode::positionOfClear(XMLClear* a) const
{
	if (a) return positionOfClear(a->lpszValue);
	return positionOfClear();
}
XMLElementPosition XMLNode::positionOfChildNode(XMLNode x) const
{
	if ((!d) || (!x.d)) return -1;
	XMLNodeData* dd = x.d;
	XMLNode* pc = d->pChild;
	int i = d->nChild;
	while (i--)
		if (pc[i].d == dd) return findPosition(d, i, eNodeChild);
	return -1;
}
XMLElementPosition XMLNode::positionOfChildNode(XMLCSTR name, int count) const
{
	if (!name) return positionOfChildNode(count);
	int j = 0;
	do
	{
		getChildNode(name, &j);
		if (j < 0) return -1;
	} while (count--);
	return findPosition(d, j - 1, eNodeChild);
}

XMLNode XMLNode::getChildNodeWithAttribute(
	XMLCSTR name, XMLCSTR attributeName, XMLCSTR attributeValue, int* k) const
{
	int i = 0, j;
	if (k) i = *k;
	XMLNode x;
	XMLCSTR t;
	do
	{
		x = getChildNode(name, &i);
		if (!x.isEmpty())
		{
			if (attributeValue)
			{
				j = 0;
				do
				{
					t = x.getAttribute(attributeName, &j);
					if (t && (xstricmp(attributeValue, t) == 0))
					{
						if (k) *k = i;
						return x;
					}
				} while (t);
			}
			else
			{
				if (x.isAttributeSet(attributeName))
				{
					if (k) *k = i;
					return x;
				}
			}
		}
	} while (!x.isEmpty());
	return emptyXMLNode;
}

// Find an attribute on an node.
XMLCSTR XMLNode::getAttribute(XMLCSTR lpszAttrib, int* j) const
{
	if (!d) return nullptr;
	int i = 0, n = d->nAttribute;
	if (j) i = *j;
	XMLAttribute* pAttr = d->pAttribute + i;
	for (; i < n; i++)
	{
		if (xstricmp(pAttr->lpszName, lpszAttrib) == 0)
		{
			if (j) *j = i + 1;
			return pAttr->lpszValue;
		}
		pAttr++;
	}
	return nullptr;
}

char XMLNode::isAttributeSet(XMLCSTR lpszAttrib) const
{
	if (!d) return FALSE;
	int i, n = d->nAttribute;
	XMLAttribute* pAttr = d->pAttribute;
	for (i = 0; i < n; i++)
	{
		if (xstricmp(pAttr->lpszName, lpszAttrib) == 0)
		{
			return TRUE;
		}
		pAttr++;
	}
	return FALSE;
}

XMLCSTR XMLNode::getAttribute(XMLCSTR name, int j) const
{
	if (!d) return nullptr;
	int i = 0;
	while (j-- > 0) getAttribute(name, &i);
	return getAttribute(name, &i);
}

XMLNodeContents XMLNode::enumContents(int i) const
{
	XMLNodeContents c;
	if (!d)
	{
		c.etype = eNodeNULL;
		return c;
	}
	if (i < d->nAttribute)
	{
		c.etype = eNodeAttribute;
		c.attrib = d->pAttribute[i];
		return c;
	}
	i -= d->nAttribute;
	c.etype = (XMLElementType)(d->pOrder[i] & 3);
	i = (d->pOrder[i]) >> 2;
	switch (c.etype)
	{
		case eNodeChild:
			c.child = d->pChild[i];
			break;
		case eNodeText:
			c.text = d->pText[i];
			break;
		case eNodeClear:
			c.clear = d->pClear[i];
			break;
		default:
			break;
	}
	return c;
}

XMLCSTR XMLNode::getName() const
{
	if (!d) return nullptr;
	return d->lpszName;
}
int XMLNode::nText() const
{
	if (!d) return 0;
	return d->nText;
}
int XMLNode::nChildNode() const
{
	if (!d) return 0;
	return d->nChild;
}
int XMLNode::nAttribute() const
{
	if (!d) return 0;
	return d->nAttribute;
}
int XMLNode::nClear() const
{
	if (!d) return 0;
	return d->nClear;
}
int XMLNode::nElement() const
{
	if (!d) return 0;
	return d->nAttribute + d->nChild + d->nText + d->nClear;
}
XMLClear XMLNode::getClear(int i) const
{
	if ((!d) || (i >= d->nClear)) return emptyXMLClear;
	return d->pClear[i];
}
XMLAttribute XMLNode::getAttribute(int i) const
{
	if ((!d) || (i >= d->nAttribute)) return emptyXMLAttribute;
	return d->pAttribute[i];
}
XMLCSTR XMLNode::getAttributeName(int i) const
{
	if ((!d) || (i >= d->nAttribute)) return nullptr;
	return d->pAttribute[i].lpszName;
}
XMLCSTR XMLNode::getAttributeValue(int i) const
{
	if ((!d) || (i >= d->nAttribute)) return nullptr;
	return d->pAttribute[i].lpszValue;
}
XMLCSTR XMLNode::getText(int i) const
{
	if ((!d) || (i >= d->nText)) return nullptr;
	return d->pText[i];
}
XMLNode XMLNode::getChildNode(int i) const
{
	if ((!d) || (i >= d->nChild)) return emptyXMLNode;
	return d->pChild[i];
}
XMLNode XMLNode::getParentNode() const
{
	if ((!d) || (!d->pParent)) return emptyXMLNode;
	return XMLNode(d->pParent);
}
char XMLNode::isDeclaration() const
{
	if (!d) return 0;
	return d->isDeclaration;
}
char XMLNode::isEmpty() const { return (d == nullptr); }
XMLNode XMLNode::emptyNode() { return XMLNode::emptyXMLNode; }
XMLNode XMLNode::addChild(
	XMLCSTR lpszName, char isDeclaration, XMLElementPosition pos)
{
	return addChild_priv(0, stringDup(lpszName), isDeclaration, pos);
}
XMLNode XMLNode::addChild_WOSD(
	XMLSTR lpszName, char isDeclaration, XMLElementPosition pos)
{
	return addChild_priv(0, lpszName, isDeclaration, pos);
}
XMLAttribute* XMLNode::addAttribute(XMLCSTR lpszName, XMLCSTR lpszValue)
{
	return addAttribute_priv(0, stringDup(lpszName), stringDup(lpszValue));
}
XMLAttribute* XMLNode::addAttribute_WOSD(XMLSTR lpszName, XMLSTR lpszValuev)
{
	return addAttribute_priv(0, lpszName, lpszValuev);
}
XMLCSTR XMLNode::addText(XMLCSTR lpszValue, XMLElementPosition pos)
{
	return addText_priv(0, stringDup(lpszValue), pos);
}
XMLCSTR XMLNode::addText_WOSD(XMLSTR lpszValue, XMLElementPosition pos)
{
	return addText_priv(0, lpszValue, pos);
}
XMLClear* XMLNode::addClear(
	XMLCSTR lpszValue, XMLCSTR lpszOpen, XMLCSTR lpszClose,
	XMLElementPosition pos)
{
	return addClear_priv(0, stringDup(lpszValue), lpszOpen, lpszClose, pos);
}
XMLClear* XMLNode::addClear_WOSD(
	XMLSTR lpszValue, XMLCSTR lpszOpen, XMLCSTR lpszClose,
	XMLElementPosition pos)
{
	return addClear_priv(0, lpszValue, lpszOpen, lpszClose, pos);
}
XMLCSTR XMLNode::updateName(XMLCSTR lpszName)
{
	return updateName_WOSD(stringDup(lpszName));
}
XMLAttribute* XMLNode::updateAttribute(
	XMLAttribute* newAttribute, XMLAttribute* oldAttribute)
{
	return updateAttribute_WOSD(
		stringDup(newAttribute->lpszValue), stringDup(newAttribute->lpszName),
		oldAttribute->lpszName);
}
XMLAttribute* XMLNode::updateAttribute(
	XMLCSTR lpszNewValue, XMLCSTR lpszNewName, int i)
{
	return updateAttribute_WOSD(
		stringDup(lpszNewValue), stringDup(lpszNewName), i);
}
XMLAttribute* XMLNode::updateAttribute(
	XMLCSTR lpszNewValue, XMLCSTR lpszNewName, XMLCSTR lpszOldName)
{
	return updateAttribute_WOSD(
		stringDup(lpszNewValue), stringDup(lpszNewName), lpszOldName);
}
XMLCSTR XMLNode::updateText(XMLCSTR lpszNewValue, int i)
{
	return updateText_WOSD(stringDup(lpszNewValue), i);
}
XMLCSTR XMLNode::updateText(XMLCSTR lpszNewValue, XMLCSTR lpszOldValue)
{
	return updateText_WOSD(stringDup(lpszNewValue), lpszOldValue);
}
XMLClear* XMLNode::updateClear(XMLCSTR lpszNewContent, int i)
{
	return updateClear_WOSD(stringDup(lpszNewContent), i);
}
XMLClear* XMLNode::updateClear(XMLCSTR lpszNewValue, XMLCSTR lpszOldValue)
{
	return updateClear_WOSD(stringDup(lpszNewValue), lpszOldValue);
}
XMLClear* XMLNode::updateClear(XMLClear* newP, XMLClear* oldP)
{
	return updateClear_WOSD(stringDup(newP->lpszValue), oldP->lpszValue);
}

char XMLNode::setGlobalOptions(
	XMLCharEncoding _characterEncoding, char _guessWideCharChars,
	char _dropWhiteSpace, char _removeCommentsInMiddleOfText)
{
	guessWideCharChars = _guessWideCharChars;
	dropWhiteSpace = _dropWhiteSpace;
	removeCommentsInMiddleOfText = _removeCommentsInMiddleOfText;
#ifdef _XMLWIDECHAR
	if (_characterEncoding) characterEncoding = _characterEncoding;
#else
	switch (_characterEncoding)
	{
		case char_encoding_UTF8:
			characterEncoding = _characterEncoding;
			XML_ByteTable = XML_utf8ByteTable;
			break;
		case char_encoding_legacy:
			characterEncoding = _characterEncoding;
			XML_ByteTable = XML_legacyByteTable;
			break;
		case char_encoding_ShiftJIS:
			characterEncoding = _characterEncoding;
			XML_ByteTable = XML_sjisByteTable;
			break;
		case char_encoding_GB2312:
			characterEncoding = _characterEncoding;
			XML_ByteTable = XML_gb2312ByteTable;
			break;
		case char_encoding_Big5:
		case char_encoding_GBK:
			characterEncoding = _characterEncoding;
			XML_ByteTable = XML_gbk_big5_ByteTable;
			break;
		default:
			return 1;
	}
#endif
	return 0;
}

XMLNode::XMLCharEncoding XMLNode::guessCharEncoding(
	void* buf, int l, char useXMLEncodingAttribute)
{
#ifdef _XMLWIDECHAR
	return (XMLCharEncoding)0;
#else
	if (l < 25) return (XMLCharEncoding)0;
	if (guessWideCharChars && (myIsTextWideChar(buf, l)))
		return (XMLCharEncoding)0;
	auto* b = (unsigned char*)buf;
	if ((b[0] == 0xef) && (b[1] == 0xbb) && (b[2] == 0xbf))
		return char_encoding_UTF8;

	// Match utf-8 model ?
	XMLCharEncoding bestGuess = char_encoding_UTF8;
	int i = 0;
	while (i < l) switch (XML_utf8ByteTable[b[i]])
		{
			case 4:
				i++;
				if ((i < l) && (b[i] & 0xC0) != 0x80)
				{
					bestGuess = char_encoding_legacy;
					i = l;
				}  // 10bbbbbb ?
			/*FALLTHROUGH*/
			case 3:
				i++;
				if ((i < l) && (b[i] & 0xC0) != 0x80)
				{
					bestGuess = char_encoding_legacy;
					i = l;
				}  // 10bbbbbb ?
			/*FALLTHROUGH*/
			case 2:
				i++;
				if ((i < l) && (b[i] & 0xC0) != 0x80)
				{
					bestGuess = char_encoding_legacy;
					i = l;
				}  // 10bbbbbb ?
			/*FALLTHROUGH*/
			case 1:
				i++;
				break;
			case 0:
				i = l;
				/*FALLTHROUGH*/
		}
	if (!useXMLEncodingAttribute) return bestGuess;
	// if encoding is specified and different from utf-8 than it's non-utf8
	// otherwise it's utf-8
	char bb[201];
	l = mmin(l, 200);
	memcpy(bb, buf, l);  // copy buf into bb to be able to do "bb[l]=0"
	bb[l] = 0;
	b = (unsigned char*)strstr(bb, "encoding");
	if (!b) return bestGuess;
	b += 8;
	while
		XML_isSPACECHAR(*b) b++;
	if (*b != '=') return bestGuess;
	b++;
	while
		XML_isSPACECHAR(*b) b++;
	if ((*b != '\'') && (*b != '"')) return bestGuess;
	b++;
	while
		XML_isSPACECHAR(*b) b++;

	if ((xstrnicmp((char*)b, "utf-8", 5) == 0) ||
		(xstrnicmp((char*)b, "utf8", 4) == 0))
	{
		if (bestGuess == char_encoding_legacy) return char_encoding_error;
		return char_encoding_UTF8;
	}

	if ((xstrnicmp((char*)b, "shiftjis", 8) == 0) ||
		(xstrnicmp((char*)b, "shift-jis", 9) == 0) ||
		(xstrnicmp((char*)b, "sjis", 4) == 0))
		return char_encoding_ShiftJIS;

	if (xstrnicmp((char*)b, "GB2312", 6) == 0) return char_encoding_GB2312;
	if (xstrnicmp((char*)b, "Big5", 4) == 0) return char_encoding_Big5;
	if (xstrnicmp((char*)b, "GBK", 3) == 0) return char_encoding_GBK;

	return char_encoding_legacy;
#endif
}
#undef XML_isSPACECHAR

//////////////////////////////////////////////////////////
//      Here starts the base64 conversion functions.    //
//////////////////////////////////////////////////////////

static const char base64Fillchar =
	_CXML('=');  // used to mark partial words at the end

// this lookup table defines the base64 encoding
XMLCSTR base64EncodeTable =
	_CXML("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");

// Decode Table gives the index of any valid base64 character in the Base64
// table]
// 96: '='  -   97: space char   -   98: illegal char   -   99: end of string
const unsigned char base64DecodeTable[] = {
	99, 98, 98, 98, 98, 98, 98, 98, 98, 97, 97, 98, 98, 97, 98, 98,
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,  // 00 -29
	98, 98, 97, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 62, 98, 98,
	98, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 98, 98,  // 30 -59
	98, 96, 98, 98, 98, 0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  10,
	11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,  // 60 -89
	25, 98, 98, 98, 98, 98, 98, 26, 27, 28, 29, 30, 31, 32, 33, 34,
	35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,  // 90 -119
	49, 50, 51, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,  // 120 -149
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,  // 150 -179
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,  // 180 -209
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98,  // 210 -239
	98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98  // 240 -255
};

XMLParserBase64Tool::~XMLParserBase64Tool() { freeBuffer(); }
void XMLParserBase64Tool::freeBuffer()
{
	if (buf) free(buf);
	buf = nullptr;
	buflen = 0;
}

int XMLParserBase64Tool::encodeLength(int inlen, char formatted)
{
	unsigned int i = ((inlen - 1) / 3 * 4 + 4 + 1);
	if (formatted) i += inlen / 54;
	return i;
}

XMLSTR XMLParserBase64Tool::encode(
	unsigned char* inbuf, unsigned int inlen, char formatted)
{
	int i = encodeLength(inlen, formatted), k = 17, eLen = inlen / 3, j;
	alloc(i * sizeof(XMLCHAR));
	XMLSTR curr = (XMLSTR)buf;
	for (i = 0; i < eLen; i++)
	{
		// Copy next three bytes into lower 24 bits of int, paying attention to
		// sign.
		j = (inbuf[0] << 16) | (inbuf[1] << 8) | inbuf[2];
		inbuf += 3;
		// Encode the int into four chars
		*(curr++) = base64EncodeTable[j >> 18];
		*(curr++) = base64EncodeTable[(j >> 12) & 0x3f];
		*(curr++) = base64EncodeTable[(j >> 6) & 0x3f];
		*(curr++) = base64EncodeTable[(j)&0x3f];
		if (formatted)
		{
			if (!k)
			{
				*(curr++) = _CXML('\n');
				k = 18;
			}
			k--;
		}
	}
	eLen = inlen - eLen * 3;  // 0 - 2.
	if (eLen == 1)
	{
		*(curr++) = base64EncodeTable[inbuf[0] >> 2];
		*(curr++) = base64EncodeTable[(inbuf[0] << 4) & 0x3F];
		*(curr++) = base64Fillchar;
		*(curr++) = base64Fillchar;
	}
	else if (eLen == 2)
	{
		j = (inbuf[0] << 8) | inbuf[1];
		*(curr++) = base64EncodeTable[j >> 10];
		*(curr++) = base64EncodeTable[(j >> 4) & 0x3f];
		*(curr++) = base64EncodeTable[(j << 2) & 0x3f];
		*(curr++) = base64Fillchar;
	}
	*(curr++) = 0;
	return (XMLSTR)buf;
}

unsigned int XMLParserBase64Tool::decodeSize(XMLCSTR data, XMLError* xe)
{
	if (xe) *xe = eXMLErrorNone;
	int size = 0;
	unsigned char c;
	// skip any extra characters (e.g. newlines or spaces)
	while (*data)
	{
#ifdef _XMLWIDECHAR
		if (*data > 255)
		{
			if (xe) *xe = eXMLErrorBase64DecodeIllegalCharacter;
			return 0;
		}
#endif
		c = base64DecodeTable[(unsigned char)(*data)];
		if (c < 97)
			size++;
		else if (c == 98)
		{
			if (xe) *xe = eXMLErrorBase64DecodeIllegalCharacter;
			return 0;
		}
		data++;
	}
	if (xe && (size % 4 != 0)) *xe = eXMLErrorBase64DataSizeIsNotMultipleOf4;
	if (size == 0) return 0;
	do
	{
		data--;
		size--;
	} while (*data == base64Fillchar);
	size++;
	return (unsigned int)((size * 3) / 4);
}

unsigned char XMLParserBase64Tool::decode(
	XMLCSTR data, unsigned char* buf, int len, XMLError* xe)
{
	if (xe) *xe = eXMLErrorNone;
	int i = 0, p = 0;
	unsigned char d, c;
	for (;;)
	{
#ifdef _XMLWIDECHAR
#define BASE64DECODE_READ_NEXT_CHAR(c)                       \
	do                                                       \
	{                                                        \
		if (data[i] > 255)                                   \
		{                                                    \
			c = 98;                                          \
			break;                                           \
		}                                                    \
		c = base64DecodeTable[(unsigned char)data[i++]];     \
	} while (c == 97);                                       \
	if (c == 98)                                             \
	{                                                        \
		if (xe) *xe = eXMLErrorBase64DecodeIllegalCharacter; \
		return 0;                                            \
	}
#else
#define BASE64DECODE_READ_NEXT_CHAR(c)                       \
	do                                                       \
	{                                                        \
		c = base64DecodeTable[(unsigned char)data[i++]];     \
	} while (c == 97);                                       \
	if (c == 98)                                             \
	{                                                        \
		if (xe) *xe = eXMLErrorBase64DecodeIllegalCharacter; \
		return 0;                                            \
	}
#endif

		BASE64DECODE_READ_NEXT_CHAR(c)
		if (c == 99)
		{
			return 2;
		}
		if (c == 96)
		{
			if (p == (int)len) return 2;
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}

		BASE64DECODE_READ_NEXT_CHAR(d)
		if ((d == 99) || (d == 96))
		{
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}
		if (p == (int)len)
		{
			if (xe) *xe = eXMLErrorBase64DecodeBufferTooSmall;
			return 0;
		}
		buf[p++] = (unsigned char)((c << 2) | ((d >> 4) & 0x3));

		BASE64DECODE_READ_NEXT_CHAR(c)
		if (c == 99)
		{
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}
		if (p == (int)len)
		{
			if (c == 96) return 2;
			if (xe) *xe = eXMLErrorBase64DecodeBufferTooSmall;
			return 0;
		}
		if (c == 96)
		{
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}
		buf[p++] = (unsigned char)(((d << 4) & 0xf0) | ((c >> 2) & 0xf));

		BASE64DECODE_READ_NEXT_CHAR(d)
		if (d == 99)
		{
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}
		if (p == (int)len)
		{
			if (d == 96) return 2;
			if (xe) *xe = eXMLErrorBase64DecodeBufferTooSmall;
			return 0;
		}
		if (d == 96)
		{
			if (xe) *xe = eXMLErrorBase64DecodeTruncatedData;
			return 1;
		}
		buf[p++] = (unsigned char)(((c << 6) & 0xc0) | d);
	}
}
#undef BASE64DECODE_READ_NEXT_CHAR

void XMLParserBase64Tool::alloc(int newsize)
{
	if ((!buf) && (newsize))
	{
		buf = malloc(newsize);
		buflen = newsize;
		return;
	}
	if (newsize > buflen)
	{
		buf = realloc(buf, newsize);
		buflen = newsize;
	}
}

unsigned char* XMLParserBase64Tool::decode(
	XMLCSTR data, int* outlen, XMLError* xe)
{
	if (xe) *xe = eXMLErrorNone;
	unsigned int len = decodeSize(data, xe);
	if (outlen) *outlen = len;
	if (!len) return nullptr;
	alloc(len + 1);
	if (!decode(data, (unsigned char*)buf, len, xe))
	{
		return nullptr;
	}
	return (unsigned char*)buf;
}
